The margin of error is 2.695 for a sample size of 256 and a population variance of 484 at a 95% confidence level.
To find the margin of error, we need to use the formula:
Margin of error = z* (sigma / sqrt(n))
Where z* is the z-score corresponding to the desired confidence level, sigma is the population standard deviation, and n is the sample size.
In this case, we know that the population variance (sigma^2) is 484, which means the standard deviation (sigma) is sqrt(484) = 22.
The sample size (n) is 256.
The confidence level is 95%, which means the z-score is 1.96.
So, plugging these values into the formula, we get:
Margin of error = 1.96 * (22 / sqrt(256))
Simplifying, we get:
Margin of error = 1.96 * (22 / 16)
Margin of error = 2.695
Hence, we use the formula Margin of error = z* (sigma / sqrt(n)), where z* is the z-score corresponding to the desired confidence level, sigma is the population standard deviation, and n is the sample size. The margin of error is 2.695 for a sample size of 256 and a population variance of 484 at a 95% confidence level.
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Triple s, add r to the result, then multiply what you have by t
what would that be
The expression representing the operation of adding r to s, tripling the result, and then multiplying q by the sum is q×(3×(s+r)).
In mathematics, an expression is a combination of one or more numbers, variables, and mathematical operations (such as addition, subtraction, multiplication, division, and exponentiation) that can be evaluated to produce a value
The expression that represents the described operation is
q × (3 × (s + r))
This expression first adds r to s, which gives (s + r), then multiplies the sum by 3, which gives 3 × (s + r), and finally multiplies the result by q, which gives q × (3 × (s + r)).
So, the final result is obtained by first adding r to s, tripling the result, and then multiplying that value by q.
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The given question is incomplete, the complete question is:
Add r to s, triple the result, then multiply q by what you have the description needs to be in expression form.
GH is a mid segment of triangle DEF and DE is a mid segment of triangle ABC. If GH=1.5 cm, what is the length of segment BC?
The length of the segment BC which is having midpoint DE is 6cm.
Given that GH is the mid-segment of triangle DEF and DE is the mid-segment of triangle ABC. From this relation, we can obtain the length of the segment BC easily.
The relation between the base and mid-segment of the triangle is,
base = 2 x mid-segment
So, in triangle DEF the length of the base DE = 2 x GH
DE = 2 x 1.5 cm = 3 cm.
Similarly, in triangle ABC the length of the base BC = 2 x DE
BC = 2 x 3 cm = 6 cm.
From the above analysis, we can conclude that the length of the segment BC is 6cm.
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−1 5 3 ÷ −6 5 = ?
SOMEONE HELP.
Answer:
Convert both numbers to improper fractions:
−1 5 3 = -(160 + 53 + 3)/60 = - 68/60
−6 5 = -(6*60 + 5)/60 = -365/60
68/60 ÷ (-365/60) = -68/60 * (-60/365)
-68/60 * (-60/365) = 4080/21900
4080/21900 = 68/365
Therefore the answer is 68/365
find the line of reflection
Answer:
a
Step-by-step explanation:
reflection ACROSS x=4
The number of visitors to an indoor water park in a month can be modeled by g(x)=15000(0.98)^x, where x is the number of months since the water park opened. Describe the dilation in g(x) as it relates to the parent function f(x)=0.98^x.
Answer:
the dilation in g(x) as it relates to the parent function f(x) is a vertical dilation by a factor of 15000.
Step-by-step explanation:
The function g(x) is a dilation of the parent function f(x) = 0.98^x.
Specifically, g(x) = 15000(0.98)^x is a vertical dilation of f(x) = 0.98^x by a factor of 15000.
This means that the graph of g(x) is the same shape as the graph of f(x), but it is vertically stretched by a factor of 15000.
In other words, the values of g(x) are 15000 times greater than the values of f(x) for any given value of x.
For example, when x = 1, f(1) = 0.98 and g(1) = 15000(0.98) = 14700. This means that the number of visitors to the water park in the second month (x = 1) is 15000 times greater than the number of visitors in the first month.
Overall, the dilation in g(x) as it relates to the parent function f(x) is a vertical dilation by a factor of 15000.
why should you not read an lia result early
It is not recommended to read an LIA (Line Immunoassay) result early because it may lead to inaccurate or false results. LIA tests rely on a specified incubation time for proper reaction between the sample and the test reagents.
It is not recommended to read an LIA (Line Immunoassay) result early. This is because the results of an LIA test may not be accurate until the recommended waiting period has passed, which is typically 20-30 minutes after the test is performed. Reading the result early may lead to incorrect interpretations, false negatives, or false positives, which could cause unnecessary anxiety, confusion, or wrong medical decisions. It is crucial to follow the manufacturer's instructions and guidelines carefully and wait for the appropriate time to read the test result accurately.
We should not read an LIA (Lateral Flow Immunoassay) result early because it may lead to inaccurate or false results. LIA tests rely on a specified incubation time for proper reaction between the sample and the test reagents. Reading the result too early can cause false negatives or false positives, which could impact critical decision-making related to diagnosis or treatment. It is crucial to follow the manufacturer's recommended waiting time to ensure accurate and reliable results.
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45. Find the perimeter of TAP with
vertices T(1, 4), A(4, 4), and P(3, 0) to the
nearest tenth.
The perimeter of TAP is approximately 12.1 units.
A two-dimensional shape's perimeter is the space surrounding its outer edge. It is the total length of the object's sides. For instance, the perimeter of a rectangle is equal to the total length of its four sides.
The circumference of a circle, also known as its perimeter, is the distance that separates it from the center.
To find the perimeter of TAP, we need to add up the lengths of its three sides. We can use the distance formula to find the lengths of each side:
Distance between T and A:
d(TA) = √((4-1)² + (4-4)²) = √(9 + 0) = 3
Distance between A and P:
d(AP) = √((3-4)² + (0-4)²) = √(1 + 16) = √(17)
Distance between P and T:
d(PT) = √((1-3)² + (4-0)²) = √(4 + 16) = √(20)
Therefore, the perimeter of TAP is:
P = d(TA) + d(AP) + d(PT) ≈ 3 + √(17) + √(20) ≈ 12.1
Rounding to the nearest tenth, the perimeter of TAP is approximately 12.1 units.
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Please help!!
1. If the cost, C(×), for manufacturing x units of a certain product is given by C(x) = x^2 - 15x + 50, find the number of units manufactured at a cost of $9,500.
2. While hovering near the top of the Ribbon Falls in Yosemite National Park at 1,600 feet, a helicopter pilot accidentally drops his sunglasses. The height h(t) of the sunglasses after tseconds is given by the polynomial function h(t) =- 16t + 1600. When will the sunglasses hit the ground?
3. After t seconds, the height h(t) of a model rocket launched from the ground into is given by the function h(t) =- 16t? + 80t. Find how long it takes the rocket to r height of 96 feet.
4. 5. The floor of a shed has an area of 90 square feet. The floor is in the shape of a rectangle whose length is 3 feet less than twice the width. Find the length and the width of the floor of the shed.
The number of units manufactured at a cost of $9,500 is approximately 141.75 units.
The sunglasses will hit the ground after 100 seconds
The rocket reaches a height of 96 feet at t = 2 seconds or t = 3 seconds.
The width of the floor is 6 feet, and the length is 9 feet.
How to calculate the valueNow we can use the quadratic formula:
x = (-b ± √(b² - 4ac)) / 2a
where a = 1, b = -15, and c = -9,450.
Plugging these values in:
x = (-(-15) ± √((-15)² - 4(1)(-9,450))) / 2(1)
x = (15 ± √(15 + 18,960)) / 2
x = (15 ± √19,185) / 2
x ≈ 141.75
In order to find when the sunglasses will hit the ground, we need to find the time t when h(t) = 0.
h(t) = -16t + 1600 = 0
Solving for t:
-16t = -1600
t = 100
Therefore, the sunglasses will hit the ground after 100 seconds.
h(t) = -16t² + 80t
96 = -16t² + 80t
0 = -16t² + 80t - 96
0 = -t² + 5t - 6
0 = (t - 2)(t - 3)
The rocket reaches a height of 96 feet at t = 2 seconds or t = 3 seconds.
2w² - 3w - 90 = 0
(2w + 15)(w - 6) = 0
If w - 6 = 0, then w = 6, which is a valid solution.
Therefore, the width of the floor is 6 feet, and the length is 2(6) - 3 = 9 feet.
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PLEASE HELP 50 POINT
X = ?
Z= ?
Given the figure below, find the values of x and z. 80° 2° (14x + 72)° X Z =
The values of x and z are 2 and 90 degrees respectively
What are the properties of transversals?The properties of transversals are;
Vertically opposite angles are equal.Corresponding angles are equal.Interior angles formed on the same side of the transversal are supplementary, that is the angles sum up to 180 degrees.Alternate angles are also known to be equal.From the information given, we have that;
The angle z is right angles, that is, it is equal to 90 degrees
z = 90 degrees
Since interior angles are supplementary, we have then that;
14x + 72 + 80 = 180
collect the like terms
14x + 152 = 180
14x = 28
Make 'x' the subject of formula
x =2
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Last year 450 theatre-goers attended a performance at St. Lawrence Centre. This year 558 people went to the performance. What was the increase as a percentage of last year's attendance?
The percentage increase of last year's attendance is 24%
In this year, There are 558 people went to the performance.
Last year, There are 450 theatre-goers attended a performance at St. Lawrence Centre.
We have to find the increase as a percentage of last year's attendance.
Now, According to the question:
Subtract from In this year's people to last year's people.
=> 558 - 450
=> 108 people more attended from the last year.
Now, Find the increment of percentage.
We know that, For calculation in percentage multiply by 100
=> 108 / 450 × 100 = 24
The percentage increase of last year's attendance is 24%
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For the function 8-(x-3)^2
find the interval(s) over which the function is decreasing
The quadratic equation is decreasing on the interval (3, ∞).
On which interval is the function decreasing?Here we have the quadratic function:
y = 8 - (x - 3)^2
Remember that the quadratic equation in the vertex form can be written as:
y = a*(x - h)^2 + k
Then in this case the vertex is at (3, 8).
And we can see that the leading coefficient is -1, then the vertex is a maximum and after that the function starts decreasing.
Thus, the function decreases on the interval (3, ∞).
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PLEASE HELP!!! URGENT!!
Refer to the attached image.
Step-by-step explanation:
See image
Using the graph, determine the coordinates of the y-intercept of the parabola.
Answer:
-5
Step-by-step explanation:
Answer: it would be -5
Step-by-step explanation: it is negative 5 because that is where there is no x intercept
Using a calculator, find the value of each of the following ratios, giving your answer correct to 3 significant figures. (a) tan 16° (b) tan 89° (c) tan 18.7° (d) tan 45.4°
Answer: (a) tan 16°:
Using a calculator, we get:
tan 16° ≈ 0.291
Rounding to three significant figures, tan 16° ≈ 0.291.
(b) tan 89°:
Using a calculator, we get:
tan 89° ≈ 57.290
Note that this value is extremely large and not meaningful in most contexts.
(c) tan 18.7°:
Using a calculator, we get:
tan 18.7° ≈ 0.340
Rounding to three significant figures, tan 18.7° ≈ 0.340.
(d) tan 45.4°:
Using a calculator, we get:
tan 45.4° ≈ 1.058
Rounding to three significant figures, tan 45.4° ≈ 1.06.
Step-by-step explanation:
a multiple regression analysis included 4 independent variables results in sum of squares for regression of 1400 and sum of squares for error of 600. the multiple coefficient of determination will be:
The multiple coefficients of determination, R², is 0.7, or 70% evaluated using the formula R² = SSR/SST.
The numerous coefficient of assurance called R-squared (R²), may be a degree of the extent of the full variety within the subordinate variable clarified by the free factors within the relapse demonstrate.
To calculate R² you can use the following formula:
R² = SSR/SST
where:
SSR is the regression sum of squares.
SST is the sum of squares. This is the regression sum of squares plus the error sum of squares.
In this case SSR = 1400 and SSE = 600. SST can be calculated as:
SST = SSR + SSE
= 1400 + 600
= 2000
Therefore, R² is
R² = SSR/SST
= 1400 / 2000
= 0.7
Therefore, the fold determination coefficient R² is 0.7 or 70%.
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Solve the equation 2x^2+18=12x algebraically show all your steps
Answer: x = 3
Step-by-step explanation:
1:simplify the expression and divide both sides by the same factor
x^2-6x+9=0
2:use the quadratic formula
ax2 + bx + c = 0
a=1 b=-6 c=9
3:Evaluate the exponent
Multiply the numbers
Subtract the numbers
Evaluate the square root
Add zero
Multiply the numbers
Cancel terms that are in both the numerator and denominator
x=3
i need help lie now plsss
Cher is doing research of the temperature of the ocean below the
surface. She finds that for every 3.25 feet below sea level, the
temperature reads 1.7 degrees cooler. What is the drop in temperature
at 26 feet below sea level? Round your answer to the nearest tenth.
label optional
Answer:
= Divide the 26 feet by 3.25 feet
26 ÷ 3.25 = 8
= then Multiply the 8 by 1.7 degrees
8 × 1.7 = 13.6
= Subtract 13.6 from 26 feet
26 - 13.6 = 12.4
= Round 12.4 to the nearest tenth
12.4 = 12
Answer: 12
The systolic blood pressure of 18-year-old women is normally distributed with a mean of 120 mmHg and a standard deviation of 12 mmHg. Using the empirical rule, what percentage of 18-year-old women have a systolic blood pressure between 96 mmHg and 144 mmHg?
The percentage of 18-year-old women who have systolic blood pressure between 96 mmHg and 144 mmHg is 95%.
We have,
We can use the empirical rule to approximate the percentage of 18-year-old women with systolic blood pressure between 96 mmHg and 144 mmHg as follows:
68% of the women have systolic blood pressure within one standard deviation of the mean, which is between:
120 - 12 = 108 and 120 + 12 = 132 mmHg.
95% of the women have systolic blood pressure within two standard deviations of the mean, which is between:
120 - 2(12) = 96 and 120 + 2(12) = 144 mmHg.
Since the range we're interested in falls within two standard deviations of the mean, we can use the empirical rule to estimate that approximately 95% of 18-year-old women have a systolic blood pressure between 96 mmHg and 144 mmHg.
Thus,
The percentage of 18-year-old women who have systolic blood pressure between 96 mmHg and 144 mmHg is 95%.
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Find the y-coordinate of the y-intercept of the polynomial function defined below.
f(x) = x(4x + 1)(5x-4) (2x - 5)
What is the quotation of 1.233 x 10^8 and 3.85 x 10^5 expressed in scientific notation
The quotient when 1.233 x 10⁸ is divisible by 3.85 x 10⁵ is 3.2 × 10²
What is Scientific notation:Scientific notation is a way of expressing very large or very small numbers in a concise and convenient form.
It involves writing a number as the product of a coefficient and a power of 10, where a coefficient is a number between 1 and 10 and the power of 10 determines the place of the decimal point.
Here we have
1.233 × 10⁸ and 3.85 × 10⁵
Now divide 1.233 × 10⁸ by 3.85 × 10⁵
=> 1.233 × 10⁸ / 3.85 × 10⁵
=> 0.320 × 10³
=> 3.2 × 10²
Therefore,
The quotient when 1.233 × 10⁸ is divisible by 3.85 × 10⁵ is 3.2 × 10²
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Please help me!! I have been stuck for Ike forever!
The required surface area of the given figure is a cubic meter.
A figure is shown,
The surface area of the figure is given as,
Surface area = 2 [πr×3] + 2[6×3]+2[4×6]+ 4[πr]
Substitute the value in the above expression<
Surface area = 2 [3.14×2×3] + 2[6×3]+2[4×6]+ 4[3.14×2]
Surface area = 146.8 cubic meters
Thus, the required surface area of the given figure is cubic meters.
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pls pls help due in an hour
Answer:
(x=8) (y=7)
Step-by-step explanation:
240.9 is what percent of 176? Round to the nearest tenth.
Answer: 136.875
Step-by-step explanation:
First of all, we make that assumption that 176 is 100% since it is our output value.
Then we seek the value with x.
Since we already know that 100%=176, we put x%=240.9 which will give us some simple equations: 100%=176(1) and x% = 240.9
And then we turn our equations into this:
100% = 240.9
x% 176
Lastly, we take the inverse (or reciprocal) of both sides
x% = 176
100 240.9
At the end, we get this:
240.9 is 136.875% of 176
When spinning a penny, Claire believes the proportion of times the penny lands on heads is not 0.5. She spins a penny 50 times and it lands on heads 30 times. Which hypotheses would test Claire’s claim?
H 0: p = 0.6, H alpha: p not-equals 0.6
H 0: p = 0.6, H alpha: p greater-than 0.6
H 0: p = 0.5, H alpha: p not-equals 0.5
H 0: p not-equals 0.5, H alpha: p = 0.5
answer c
The hypotheses test Claire's claim is:
H 0: p = 0.5, H alpha: p not-equals 0.5
We have the information:
The proportion of times the penny lands on heads is not 0.5.
She spins a penny 50 times and it lands on heads 30 times.
To find the which hypotheses test Claire's claim.
Now, According to the question:
We take the value of [tex]\alpha =0.05[/tex]
Because the p-value is smaller than alpha, we reject the null hypothesis.
Therefore, we conclude that the alternative hypothesis is correct and the proportion of heads is greater than 0.5
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Find the area of the YELLOW shape. PLEASE HURRY
The area of the yellow shape will be 5000 m sq.
We know that area of the rectangle is the product of the length and width of a given rectangle.
The area of the rectangle = length × Width
The parameters are given as;
Length = 95 meters
Width = 60 meter
For a triangle we have the dimension of height is 35 meter
the base = 95 - 55 = 40 meter
First we need to find the area of the triangle;
Area =1/2 x base x height
Area =1/2 x 40 x 35
Area = 700 meter sq.
Then area of the rectangle = length × Width
= 95 x 60
=5700 m sq.
Therefore, the area of the yellow shape is;
= Area of rectangle - area of triangle
= 5700 - 700
= 5000 m sq.
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1
Select the correct answer.
If function g has the factors (x-7) and (x + 6), what are the zeros of function g?
OA. -7 and 6
OB. -6 and 7
O c.
6 and 7
OD. -7 and -6
Redet
Next
The zeros of the given function g are: B. -6 and 7
What are the zeros of the function?The zeros of a function are defined as the values of the variable of the given function in a way that the function equals 0. Graphically, the zeros of a function are the points on the x-axis where the graph cuts the x-axis. This means, we can say that the zeros of a function are the x-intercepts of its graph.
We are told that g has the factors (x - 7) and (x + 6), and as such this means that the zeros will be gotten by equating the factors to zero to get:
(x - 7) = 0 and (x + 6) = 0
x = 7 and x = -6
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Tonys fun emporium charges a $5 entry fee and $1 per ride. Marks entertainment world charges no entry fee but $3 per ride. SHOW WORK
1. Write an equation for each amusement park
2. How much will it cost at each park to ride 10 rides
3.If you have $21 which park should you go to
Tony's Fun Emporium Cost = 5 + 1x and Mark's Entertainment World: Cost = 3x are the required equations.
It will cost $15 to ride 10 rides at Tony's Fun Emporium and $30 to ride 10 rides at Mark's Entertainment World.
If you want to go on as many rides as possible, Tony's Fun Emporium is the better option.
Equations for each amusement park:
Tony's Fun Emporium: Cost = 5 + 1x, where x is the number of rides.
Mark's Entertainment World: Cost = 3x, where x is the number of rides.
To find out how much it will cost to ride 10 rides at each park:
Tony's Fun Emporium: Cost = 5 + 1(10) = $15
Mark's Entertainment World: Cost = 3(10) = $30
So, it will cost $15 to ride 10 rides at Tony's Fun Emporium and $30 to ride 10 rides at Mark's Entertainment World.
Tony's Fun Emporium: 5 + 1x = 21
1x = 16
x = 16 rides
Mark's Entertainment World: 3x = 21
x = 7 rides
Hence, with a budget of $21, you can go on 16 rides at Tony's Fun Emporium or 7 rides at Mark's Entertainment World. If you want to go on as many rides as possible, Tony's Fun Emporium is the better option.
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The medians of the following dot plots are 6, 12, 13, and 15, but not in that order. match each dot plot with its median.
Four dot plots labeled dot plot 1, dot plot 2, dot plot 3, and dot plot 4 each with the numbers 0 through 20, in increments of 2, indicated. The data are as follows: Dot plot 1: 1, 1 dot. 2, 1 dot. 5, 2 dots. 6, 2 dots. 7, 1 dot. 8, 2 dots. 9, 1 dot. Dot plot 2: 10, 2 dots. 11, 2 dots. 15, 3 dots. 17, 1 dot. 18, 1 dot. 19, 1 dot. Dot plot 3: 5, 1 dot. 6, 1 dot. 9, 1 dot. 11, 2 dots. 13, 1 dot. 14, 1 dot. 15, 3 dots. Dot plot 4: 8, 2 dots. 10, 2 dots. 13, 2 dots. 14, 1 dot. 16, 3 dots.
Group of answer choices
1
[ Choose ]
2
[ Choose ]
3
[ Choose ]
4
[ Choose ]
Based on the given information, we can match each dot plot with its median as follows:
Dot plot 1: Median = 6
Dot plot 2: Median = 15
Dot plot 3: Median = 12
Dot plot 4: Median = 13
Given that;
The medians of the following dot plots are 6, 12, 13, and 15,
Now,
Four dot plots labeled dot plot 1, dot plot 2, dot plot 3, and dot plot 4 each with the numbers 0 through 20, in increments of 2, indicated.
And, The data are as follows:
Dot plot 1: 1, 1 dot. 2, 1 dot. 5, 2 dots. 6, 2 dots. 7, 1 dot. 8, 2 dots. 9, 1 dot.
Dot plot 2: 10, 2 dots. 11, 2 dots. 15, 3 dots. 17, 1 dot. 18, 1 dot. 19, 1 dot.
Dot plot 3: 5, 1 dot. 6, 1 dot. 9, 1 dot. 11, 2 dots. 13, 1 dot. 14, 1 dot. 15, 3 dots.
Dot plot 4: 8, 2 dots. 10, 2 dots. 13, 2 dots. 14, 1 dot. 16, 3 dots.
Hence, By given condition we get;
Dot plot 1: Median = 6
Dot plot 2: Median = 15
Dot plot 3: Median = 12
Dot plot 4: Median = 13
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Please help asap , I honestly don't know how to do this but im trying to get my credit recovery done , if you know any quizlets for THIS please let me know
ABCD is a Rectangle, ∠A, ∠B, ∠C and ∠D are right angles by definition of right angle.
Given that ABCD is a rectangle.
Each angle in the rectangle has 90 degrees.
∠A, ∠B, ∠C and ∠D are right angles by definition of rectangle.
∠A≅∠C; ∠B≅∠D by Opposite Angles of a Rectangle are Congruent" theorem.
ABCD is a Rectangle
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