probability and sampling end of unit assesment b
ITS DUE TOMORROW HELP

Each piece of webbing is either 3/5 yards or 21.6 inches long, depending on the desired unit of measurement.

To find the length of each piece of webbing, we can start by using the formula for dividing a quantity into equal parts. The formula is:

quantity / number of parts = length of each part

In this case, Alexis has 9 yards of webbing, and he wants to divide it into 15 pieces that are each the same length. Therefore, we can plug in the values into the formula as follows:

9 / 15 = length of each part

Simplifying the fraction, we get:

3 / 5 = length of each part

Therefore, each piece of webbing is 3/5 yards long.

We can also express this as a decimal or in inches, depending on the desired unit of measurement. To convert 3/5 yards to inches, we can multiply by the conversion factor of 36 (since there are 36 inches in a yard):

3/5 yards x 36 inches/yard = 21.6 inches

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Answer: zero

Step-by-step explanation:

slope is "rise over run", and there is no ("0") "rise" as the y-value is not increasing; as 0 divided by anything is still 0, the slope is zero.

The MSE for the regression models developed in parts (b) and (d) is Ŷ = 5.10 + 0.83X

Let's assume that the dependent variable in both models is denoted by Y, and the independent variable is denoted by X. The regression model developed in part (b) is expressed as:

Y = 5.10 + 0.83X

The regression model developed in part (d) is expressed as:

Y = 4.90 + 0.89X + 0.012X²

To calculate the MSE for the model developed in part (b), we need to first calculate the predicted values of Y using the equation:

Ŷ = 5.10 + 0.83X

Then, we can calculate the squared difference between the predicted value Ŷ and the actual value Y for each data point, and take the average of these squared differences. This gives us the MSE for the model developed in part (b).

Similarly, to calculate the MSE for the model developed in part (d), we need to first calculate the predicted values of Y using the equation:

Ŷ = 4.90 + 0.89X + 0.012X^2

Then, we can calculate the squared difference between the predicted value Ŷ and the actual value Y for each data point, and take the average of these squared differences. This gives us the MSE for the model developed in part (d).

After calculating the MSE for both models, we can compare them to determine which model is more effective. A lower MSE indicates that the model is more accurate in predicting the dependent variable.

Therefore, the model developed in either part (b) or (d) with the lower MSE is considered to be more effective.

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The functions of fat cells are:

Store energy

Hold body heat

Absorb shocks.

Adipocytes, sometimes referred to as fat cells, are specialized cells that serve as major sources of fat-based energy storage. They are essential to maintaining the equilibrium between energy intake and energy expenditure, which is known as energy homeostasis. Triglycerides, the primary building block of body fat, is accumulated in the adipose tissue when we consume more energy (calories) than we expend.

Leptin and adiponectin are two hormones secreted by fat cells that control insulin sensitivity, metabolism, and hunger. For instance, leptin helps to control body weight by alerting the brain when we've eaten enough to eat. Contrarily, adiponectin enhances insulin sensitivity and possesses anti-inflammatory properties.

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A coin is flipped 200 times. The table shows the frequency of each event. So ,The experimental probability of landing on heads: 48%

Description:

To determine the experimental probability of landing on heads, we need to divide the frequency of heads by the total number of coin flips and express it as a percentage.

The total number of coin flips is:

200 (total number of trials)

The frequency of heads is:

96

So, the experimental probability of landing on heads is:

96/200 = 0.48 = 48%

Therefore, the answer is:

48%

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To find the limit of (1 - sin(θ))/(1 + cos(6θ)) as θ approaches π/2, we can apply a trigonometric identity:

1 - sin(θ) = cos(θ)

1 + cos(6θ) = 2cos^2(3θ)

Substituting these expressions into the original limit, we have:

lim (1 - sin(θ))/(1 + cos(6θ)) = lim cos(θ)/(2cos^2(3θ))

Now, as θ approaches π/2, the denominator 2cos^2(3θ) approaches 0, so we can apply L'Hospital's rule to the limit:

lim cos(θ)/(2cos^2(3θ)) = lim -sin(θ)/(12cos(θ)sin(3θ))

Applying L'Hospital's rule again, we take the derivative of the numerator and denominator separately with respect to θ:

= lim -cos(θ)/(12cos(θ)cos(3θ) + 3sin(θ)sin(3θ))

= lim -1/(12cos(3θ) + 3tan(θ))

Substituting θ = π/2, we have:

lim -1/(12cos(3π/2) + 3tan(π/2)) = lim -1/0

Since the denominator approaches 0 and the numerator is negative, the limit approaches negative infinity.

Therefore, the limit of (1 - sin(θ))/(1 + cos(6θ)) as θ approaches π/2 is negative infinity.

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The tangents of the acute angles in the right triangle are tan(A) = 7√2/8 and tan(B) = 4/7√2

From the question, we have the following parameters that can be used in our computation:

Leg 1 = 7

Leg 2 = 4√2

Hypotenuse = 9

The acute angles in the triangle are B and A

The trigonometric ratio for tan A is represnted as

tan(A) = Opposite/Adjacent

Substitute the known values in the above equation, so, we have the following representation

tan(A) = 7/4√2

So, we have

tan(A) = 7√2/8

For the other angle, we have

tan(B) = 4/7√2

Hence, the solution is tan(B) = 4/7√2

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The distance between Blueville from Greentown is found to be 71.35 miles.

We can solve this problem by using the Pythagorean theorem. Let x be the distance between Blueville and Greentown. Then, we have a right triangle with, one leg of length x (the distance between Blueville and Greentown) another leg of length 141 miles (the distance between Blueville and Yellowsburg) and a hypotenuse of length 158 miles (the distance between Greentown and Yellowsburg)

From Pythagorean theorem, we have,

x² + 141² = 158²

Simplifying and solving for x, we get:

x² + 19881 = 24964

x² = 5083

x ≈ 71.35

Hence, Blueville is approximately 71.35 miles from Greentown.

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Answer:

71miles

Step-by-step explanation:

The samples must be dependent is the false assumptions all other assumptions about the two-way ANOVA is correct. Option A is the correct answer.

According to the levels of two categorical variables how the mean of quantitative variables changes is estimated by A two-way ANOVA. When you want to know how two independent variables, in combination, affect a dependent variable we can use a two-way ANOVA.

The samples must be dependent is the false assumption because samples are supposed to be independent, not dependent multicollinearity is minimized. the assumption of the two-way ANOVA is the Independence of variables, Homoscedasticity, and Normal distribution of variables.

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The requried, use the Distance Formula to find the lengths JK, JL, and KL, and then apply the Triangle Inequality Theorem.

As given in the question, points J, K, and L form the vertices of a triangle,
The distance of the sides of the triangle can be calculated by the distance formula then apply triangle inequality to check whether the given shape is a triangle or not.

Therefore, use the Distance Formula to find the lengths JK, JL, and KL, and then apply the Triangle Inequality Theorem.

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The hexadecimal representation of the decimal number 4188.625 is 105C.

Let's apply this process to the decimal number 4188.625.

First, we divide 4188 by 16, which gives us a quotient of 261 and a remainder of 12. The remainder of 12 corresponds to the hexadecimal digit C (since 12 is equal to C in hexadecimal).

Next, we divide 261 by 16, which gives us a quotient of 16 and a remainder of 5. The remainder of 5 corresponds to the hexadecimal digit 5.

We then divide 16 by 16, which gives us a quotient of 1 and a remainder of 0. The remainder of 0 corresponds to the hexadecimal digit 0.

Finally, we divide 1 by 16, which gives us a quotient of 0 and a remainder of 1. The remainder of 1 corresponds to the hexadecimal digit 1.

Hence resulting base 16 values is 105C.

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Answer:

We can use the following formulas to solve the problem:

The area of a circle is given by the formula A = πr^2, where r is the radius of the circle.

The area of a sector of a circle is given by the formula A = (θ/360)πr^2, where θ is the central angle of the sector in degrees.

a) Each sprinkler rotates 360 degrees, so it covers a full circle with a radius of 13 feet. Therefore, the area covered by each sprinkler is:

A = πr^2 = π(13 ft)^2 = 169π sq ft ≈ 530 sq ft (rounded to the nearest whole number)

b) Since there are 8 sprinklers, the total area covered by all the sprinklers is 8 times the area covered by one sprinkler:

Total area = 8 x 530 sq ft = 4,240 sq ft

Therefore, all 8 sprinklers combined cover an area of 4,240 square feet.

Step-by-step explanation:

a) Each sprinkler covers an area of approximately 530 square feet (pi times the square of the radius, where radius is half of the distance reached by the sprinkler).

b) All 8 sprinklers combined cover an area of approximately 4,240 square feet (530 square feet times 8).

To find the area covered by each sprinkler,

we need to calculate the area of the circle formed by the water spray. The radius of the circle is the distance reached by the sprinkler, which is 13 feet. So, the area covered by each sprinkler is π(13)^2 square feet, which is approximately equal to 530.93 square feet.

Since there are 8 sprinklers, the total area covered by all of them is simply 8 times the area covered by each sprinkler. Therefore, the total area covered by all 8 sprinklers combined is 8 x 530.93 square feet, which is equal to 4,247.44 square feet.

To answer part A of the problem, we need to first calculate the area covered by each sprinkler. Since each sprinkler covers a circular area with a radius of 13 feet, we can use the formula for the area of a circle (πr^2) to find the area covered by each sprinkler, which is approximately 530.93 square feet. For part B, we simply need to multiply the area covered by each sprinkler by the number of sprinklers, giving us a total coverage area of about 4,247.43 square feet for all 8 sprinklers.

The surface area of the square pyramid can be calculated as approximately: 105 square inches.

To find the surface area of the given square pyramid that is shown above, we can solve to find the area of each face represented by the net and find their sum all together.

The surface area = 4(area of triangular face) + area of square base

= 4(1/2 * base * height) + (side length)²

= 4(1/2 * 5 * 8) + (5)²

= 4(20) + 25

= 80 + 25

The surface area = 105 square inches.

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Applying the centroid theorem, the length of DG in the triangle shown below is calculated as: DG = 34 units.

Given the following information regarding the triangle shown in the image as follows:

G is the centroid of triangle DEF

CG = (x + 5) units

DG = (3x - 2) units.

Based on the centroid theorem, we have:

DG = 2/3(CD)

Plug in the values into the equation above:

3x - 2 = 2/3 * (x + 5 + 3x - 2)

Solve for x:

3(3x - 2) = 2 * (4x + 3)

9x - 6 = 8x + 6

9x - 8x = 6 + 6

x = 12

DG = 3x - 2 = 3(12) - 2

DG = 34 units.

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The value of the sine of the angle (A - B) will be 0.309.

Given that:

sin A = - 4/5

cos B = 1/3

Trigonometric functions examine the interaction between the dimensions and angles of a triangular form.

The value of A is calculated as,

sin A = - 4/5

A = 307°

The value of B is calculated as,

cos B = 1/3

B = 289°

The value of sin (A- B) is calculated as,

sin (A- B) = sin(307° - 289°) = sin 18°

sin (A- B) = sin 18°

sin (A- B) = 0.309

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a. The congruence statement made from the figure is triangle PQR and triangle SRQ is congruent by SSA congruence theorem

b. The congruence criteria used is SSA congruence theorem

C. the statement is completed as Δ RSQ ≅ Δ RPQ

d. The corresponding angles and sides are equal

SSA is a triangle congruence rule, but it isn't constantly sufficient to prove that two triangles are congruent.

SSA states that if  pairs of corresponding aspects of two triangles are identical in period, and the angles contrary one of the pairs of sides are identical in both triangles, then the triangles are congruent.

The sides used for the theorem according to the figure are

Side: PR ≅ QS given

Side: QR ≅ QR reflexive property

Angle: ∠ Q ≅ ∠ R

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The length of the sides of the triangle and the angles of the triangle obtained using the law of sines, indicates that the correct option is the option B.;

B. There is only 1 possible solution for the triangle.

The measurement for the remaining angles A and C and the side c are as follows;

m∠A = 45°11', m∠C = 100°12', The length of the side c ≈ 53.4

The law of sines states that the ratio of the sine of an angle to the length of the facing side is equivalent to the corresponding ratio of the other two angles and sides of a triangle.

The dimensions of the triangle are; B = 34°42', a = 38.5, and b = 30.9

Whereby two sides of the triangle and the non included angle are known, the triangle is an example of a SSA triangle and the triangle may have more than one solution or no solution.

The sine rule, indicates;

30.9/(sin(42°42') = 38.5/(sin(A))

(sin(A)) = 38.5 × (sin(42°42')/30.9

m∠A = arcsin(38.5 × (sin(42°42')/30.9) ≈ 45.18° ≈ 45°11'

m∠C = 180° - 34.7 - 45.18 ≈ 100.12° = 100° 7.2'

The length of the side c obtained using cosine rule is therefore;

c² = 38.5² + 30.9² - 2 × 38.5 × 30.9 × cos(100.12°)

c = √(38.5² + 30.9² - 2 × 38.5 × 30.9 × cos(100.12°)) ≈ ±53.4

The length of the triangle is positive, therefore, c ≈ 53.4

Therefore, there is only one possible triangle.

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There are 2 orange jelly beans in the jar.

Probability is a branch of mathematics that measures the likelihood of a specific event occurring. It is used to quantify the chance of something happening and to assess the risk associated with certain decisions or actions. Probability is the mathematical way of expressing the likelihood of certain outcomes or events occurring. It is used to predict the likelihood of success or failure in a wide range of situations.

To answer this question, we must use the given information to construct a mathematical equation. Let x represent the number of orange jelly beans in the jar. Since there are a total of 3 black jelly beans in the jar when the probability of drawing a black jelly bean is 1/3, the total number of jelly beans must be 3 times the number of orange jelly beans, or 3x. Similarly, when the probability of drawing a black jelly bean is ¼, the total number of jelly beans must be 4 times the number of orange jelly beans, or 4x.

Now, we can set up the equation 3x = 4x – 2, which can be simplified to x = 2. Therefore, there are 2 orange jelly beans in the jar.

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Answer:

vertex = (-3, 18)

Step-by-step explanation:

Rewrite in vertex form and use this form to find the vertex (h,k).

Step-by-step explanation:

You can graph it to find the vertex  or  massage this equation into vertex form.   Thirdly , if you know calculus, you can take the first derivative and set it = 0 .

y = 2x^2 + 12x + 36    Arrange to vertex form by completing the square

     2 ( x^2 + 6x)     + 36

     2 ( x+3)^2    -18 + 36

      2 (x+3)^2  + 18    <====vertex fom               Vertex is  -3,18

By graphing: see image

By calculus

 derivative    4x + 12 = 0

                         x = -3       use this value in the original equation to find y = 18

                                           (-3,18)

The solution is, 32 of  1/4 cup servings are in 8 cups of cashews.

let,

x of  1/4 cup servings are in 8 cups of cashews.

Divide 8 with 1/4

i.e.

(8)/(1/4)

now, we have,

Flip the second fraction, and change the division into multiplication, then solve

we get,

(8)/(1/4)

= 8 x 4

= 32

so, x = 32

32 is the answer

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The exponential equation is solved and the function is y = 2ˣ

Given data ,

Let the x values be represented as x = { 0 , 3 , 6 }

Let the y values be represented as y = { 1 , 8 , 64 }

So , the exponential equation is given as

y = 2ˣ

when x = 0

y = 2⁰

y = 1

when x = 3

y = 2³ = 8

when x = 6

y = 2⁶ = 64

Hence , the exponential equation is y = 2ˣ

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The statement that best explains the law of demand is:

"The quantity demanded by consumers decreases as prices rise, then increases as prices fall."

According to the law of demand, there is an inverse relationship between a good or service's price and the amount of it that customers are willing and able to buy. A good or service's quantity required drops as its price rises and an increase in quantity is seen as the price of the good or service falls. A fundamental idea in economics, this inverse relationship is predicated on the idea that consumers act rationally and aim to maximize their utility or satisfaction from consumption.

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Answer:

b.

Explanation:

A fraction is a way to describe a part of a whole. The height of the stack is 6.38 ft.

A mixed fraction is a fraction that contains a whole number and a fraction whose denominator is greater than the numerator. A mixed fraction can be converted as,

[tex]2 \ \dfrac{1}{2}[/tex]

[tex]= \dfrac{(2\times2 + 1)}{2}[/tex]

[tex]= \dfrac{5}{2}[/tex]

[tex]= 2.5[/tex]

Given that one box that is 3 1/4 feet tall and another box that is 2 5/8 feet tall. Now, the height of the stack will be,

Height of the stack = Height of first box + Height of the second Box

[tex]= 3 \ \dfrac{1}{4} \ \text{ft} + 2 \ \dfrac{5}{8} \ \text{ft}[/tex]

[tex]= \huge \text[\dfrac{(3\times4 + 3)}{4}\huge \text] + 2 \ \dfrac{5}{8}[/tex]

[tex]= \huge \text(\dfrac{15}{4}\huge \text) + 2 \ \dfrac{5}{8}[/tex]

[tex]= 3.75 + 2.63[/tex]

[tex]= 6.38 \ \text{ft}[/tex]

Hence, the height of the stack is 6.38 ft.

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The statement that is NOT true about infants' approximate number system is option (b) Infants can only discriminate approximate numbers when there is a large difference between the numbers.

Infants possess an innate sense of quantity that enables them to discriminate between different numerical magnitudes. This sense of quantity, also known as the approximate number system, is present in infants as young as 6 months old. Infants are able to discriminate between numerical quantities even when the difference between them is small, and their ability to do so improves with age.

However, their ability to discriminate between numerical quantities can be affected by various factors, including the numerical ratio between the stimuli, the duration of the presentation, and the task demands. Overall, the approximate number system is an important precursor to the development of more advanced mathematical skills.

Therefore, the correct option is (b) Infants can only discriminate approximate numbers when there is a large difference between the numbers.

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The given question is incomplete, the complete question is:

Which of the following is NOT true about infants' approximate number system?

Select one: a. Infants are able to discriminate approximate numbers by 6 months of age.

b. Infants can only discriminate approximate numbers when there is a large difference between the numbers.

c. Infants are unable to discriminate approximate numbers when dots change in both size and position simultaneously.

d. Infants' ability to discriminate approximate numbers is not dependent on non-numeric perceptual properties.

The solution is:

Part a) is the measure of the angle formed by two consecutive radii is 30 degrees

part b) is

the measure of the angle formed by a radius and a side is 75°

we know that

A regular dodecagon has 12 sides

Central angle of a regular polygon is an angle whose vertex is the center of the polygon with two consecutive radii

thus

the measure of a central angle is

m∠AOC=360/n

where n is the number of sides

so

m∠AOC=360/12-----> 30°

therefore

the answer Part a) is the measure of the angle formed by two consecutive radii is 30 degrees

Part b)

we know that

OAC is an isosceles triangle

so

OA=OC

m∠OAC=m∠OCA

the sum of the internal angles of a triangle is 180 degrees

so

180=2*m∠OAC+m∠AOC-----> m∠OAC=[180-30]/2----> 75°

the answer part b) is

the measure of the angle formed by a radius and a side is 75°

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Answer:

Step-by-step explanation:

The distance from the midline to the highest point of the wave is the same distance as the lowest point is from the midline.

Find the distance from crest-to-trough and divide by 2 to find the midline:

(495 - 20) / 2 = 237.5

237.5 is also the amplitude of the wave

The midline is the horizontal line of y = 237.5

In this context, when she is at a height of 237.5 ft, she is half way from the top of the ferris wheel and half way from the bottom.

Since this equation must hold for all values of x, we can substitute x = i and x = -i to get two equations: 2A + 3i = -5i=> 2A - 3i = 5i=> A = -3/2Therefore, A is equal to -3/2.

A polynomial is a mathematical statement with coefficients and uncertainty that uses only additions, subtractions, multiplications, and powers of positive integer variables. There is just one indeterminate x polynomial identified by the formula x2 4x + 7. The term "polynomial" refers to an expression in mathematics that consists of variables (sometimes referred to as "indeterminates") and coefficients that may be added, subtracted, multiplied, and raised to negative integer powers of non-variables. A polynomial is an algebraic expression having variables and coefficients. Only addition, subtraction, multiplication, and non-negative integer exponents are permitted in expressions. The word for these expressions is polynomials.

To find A, we need to perform polynomial long division of P(x) by [tex]x^2 + 1[/tex]and get the remainder equal to -5x.

          x

   --------------

[tex]x^2 + 1 | x^3 + 3x^2 - 2Ax + 3[/tex]

         [tex]x^3 + 0x^2 + x[/tex]

          --------------

               [tex]3x^2 - 2Ax[/tex]

           [tex]3x^2 + 0x - 3i[/tex]

                ------------

                    [tex]2Ax + 3i[/tex]

                [tex]2Ax + 0x - 2iA[/tex]

                       -----------

                        [tex]3i + 2iA[/tex]

The remainder of the division is (2A + 3i) when the divisor is [tex]x^2 + 1[/tex]. We know that this remainder is equal to -5x, so we can set up the equation:

2A + 3i = -5x

Since this equation must hold for all values of x, we can substitute x = i and x = -i to get two equations:

2A + 3i = -5i

2A - 3i = 5i

A = -3/2

Therefore, A is equal to -3/2.

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Answer:

The domain of the function are values of x that respect the following condition: x[tex]\geq[/tex]7 (i think so lmk if is wrong)

Step-by-step explanation:

The area of the silver border around the circular face is 1.63 square centimeter.

Given that, radius of circular surface is 1 cm and the length of the apothem is 1+0.2=0.2 cm.

Central angle for octagon = 360°/8

= 45°

θ= 45°/2

= 22.5°

The area of the regular octagon = na²×tanθ

= 8×1.2²×tan22.5°

= 4.77 square centimeter

Here, area of a circle = πr²

= 3.14×1²

= 3.14 square centimeter

Area of border = 4.77- 3.14

= 1.63 square centimeter

Therefore, the area of the silver border around the circular face is 1.63 square centimeter.

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