the amount of snowfall falling in a certain mountain range is normally distributed with a mean of 70 inches and a standard deviation of 10 inches. what is the probability that the mean annual snowfall during 25 randomly picked years will exceed 72.8 inches?

The geometric mean between 5 and 125 will be 25.

What is geometric mean?

The sequence where each word is varied by another by a common ratio is known as a geometric progression or geometric sequence. When we add a constant (which is not zero) to the term before it, the sequence's subsequent term is created. The following symbols stand in for it: a, ar, ar2, ar3, ar4, etc.

The Geometric Mean (GM) is the average value or mean that, in mathematics, represents the centre tendency of a group of numbers by calculating the product of their values. In essence, we multiply the numbers collectively and take the nth root of the resulting multiplied numbers, where n is the total number of data values.

The given number is 5, 125.

So the Geometric Mean willl be (5*125)[tex].^{1/2}[/tex]

So [tex](625)^{1/2}[/tex]

= 25

Hence, the geometric mean between 5 and 125 will be 25.

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f(x) = 16x - x² is the given quantity expressed as a function f(x)

A function is an expression that shows the relationship between the independent variable and the dependent variable.  A function is usually denoted by letters such as f, g, etc.

Given that: the product of two numbers x and y whose sum is 16. Thus:

f(x) = x × y  ---- (1)

x + y = 16   ---- (2)

=> y = 16-x  ---- (3)

Put (3) in (1):

f(x) = x × (16-x )

f(x) = 16x - x²

Therefore, the given quantity expressed as a function f(x) is f(x) = 16x - x²

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The joint probability density function (joint pdf) is a function used to characterize the probability distribution of multiple continuous random variables that together form a continuous random vector. The results of asking values are

a) E(X³) = 5.86

b)E(X/Y = 2) = 2

c) E(Y²) = 1.2

d) σᵧ= 0.7483

e) E(3Y) = 2.4

We are given that X, Y denotes the number of students and number of questions respectively.

P(X,Y) denote the joint probability mass function for X and Y. Also provide,

P(0,0)=0.04, P(1,0)=0.16, P(1,1)=0.1, P(2,0)=0.2, P(2,1)=0.3, P(2,2)=0.2.

Therefore the required quantities here are computed as:

P(X = 0) = 0.04

P(X = 1) = 0.26

P(X = 2) = 0.7

a) E(X³) = 0 + 1×0.26 + 23×0.7

= 5.86 is the required value here.

b) Now given Y = 2, the conditional Probability density function for X here is obtained as:

P(X = 2 | Y = 2) = 1

Therefore, E(X | Y = 2) = 2 here.

c) For Y, we have here:

P(Y = 0) = 0.4

P(Y = 1) = 0.4

P(Y = 2) = 0.2

Therefore,

E(Y²) = 0.4×1 + 22×0.2

= 1.2 is the required value here.

d) The standard deviation of Y here is computed as:

E(Y) = 1×0.4 + 2×0.2 = 0.8

S.D(Y) = sqrt( E(Y²) - [E(Y)]²) = sqrt( 1.2 - 0.82 )

= 0.7483 is the required value here.

e) E(3Y) = 3E(Y) = 3×0.8

= 2.4 is the required value here.

The probability that X > 1 and Y > 0 here is computed as:

= p( 2, 1). + p(2, 2) = 0.3 + 0.2 = 0.5 is the required probability.

Hence, we calculate all the required Probability values .

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Complete question:

A professor of Statistics records the number of students who attend office hours one day and the number of questions asked on any one day. Let X denote the number of students and Y the number of questions asked, and let P(X,Y) denote the joint probability mass function for X and Y.

Records indicate that P(0,0)=0.04, P(1,0)=0.16, P(1,1)=0.1, P(2,0)=0.2, P(2,1)=0.3, P(2,2)=0.2.

Thus, for any given day, the probability of, say, two students and 1 question is 0.3.

matches the concept value.

All options are same

a) E(X³)

b)E(X/Y = 2)

c) E(Y²)

d) σᵧ

e) E(3Y)

For the water utility (an enterprise fund) has just sent out a purchase order to a vendor for some new equipment, of the following that would be included in the journal entry to record this event is none of the above. (Option D)

An enterprise fund refers to a fund which may be used to report any activity for which a fee is charged to external users for goods or services. An enterprise fund uses a separate accounting and financial reporting mechanism for which revenues and expenditures are segregated into a fund with financial statements separate from all other governmental activities. Enterprise funds provide goods and services to customers outside the reporting entity. Hence, from the options of journal entry records, none of the given options will be used.

Note: The question is incomplete as it is missing options which are A) A credit to Accounts Payable. B) A debit to Encumbrances. C) A debit to Expenditures. D) None of the above.

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Answer:

first blank: 13

2nd/3rd blank:14/13

4th blank: 13

5th/6th blank: 14/13

7th blank: 42

Step-by-step explanation:

From the first line to the second you need to add

4/7x + 5/14x

Times 2 on the top and bottom of 4/7 to make it be 8/14.

then you can add:

8/14x + 5/14x

Keep the 14 on the bottom, add the tops. 8+5 is 13

= 13/14x

The 13 on top is the first fill in.

To solve for x you can multiply by the reciprocal of 13/14 (just flip it over)

14/13 is the blank/blank on both sides of the equal sign in front of the parenthesis.

The blank over 14 is 13, the same as the first answer.

The 14/13 × 13/14x

just leaves x on the left in the last line of the equation.

On the right, you have

14/13 × 39

You can divide the 39/13 to get 3. The problem becomes

14 × 3

= 42 This is the last fill in.

13/14 x = 39

14/13(13/14x)=14/13(39)

x = 42

The proof as explained below shows that ΔBAD ≅ ΔCDA by the side-side-side (SSS) congruence theorem.

The Side-side-side (SSS) congruence theorem states that two triangles are congruent to each other if the three sides of one triangle are equal or congruent to the corresponding three sides of the other.

The proof that shows triangles BAD and CDA are congruent is explained below.

Statement                                 Reason                                        

1. BD ≅ AC; BA ≅ DC              1. Given

2. AD ≅ AD                              2. Reflexive property

3. ΔBAD ≅ ΔCDA                    3. Side-side-side (SSS)

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We have proved that the set of all points (x, y) that are equidistant from the point (f, k) and the line x.

What is a parabola?

A parabola is a plane curve that is mirror-symmetrical and roughly U-shaped in mathematics. It fits several seemingly disparate mathematical descriptions, all of which can be shown to define the same curves. A point and a line are two ways to describe a parabola.

That’s a parabola in the usual orientation. y=1 is the directrix. (f, k) is the focus. Squared distance, as usual, is the fundamental quantity.

If (x,y) is a point in the set, the squared distance to y=1 is (y−1)². The squared distance to (f, k).

     (y - 1)²=(x - f)²+(y - k)²

Hence, we can say that the set of all points (x, y) is equidistant from the point (f, k) and the line x.

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a. 40%

the total amount of people is 100%

assume a person gets either food poisoning or doens't get food poisoning

100% - 60% = 40%

Answer:

[tex]\frac{7}{10}[/tex]

Step-by-step explanation:

[tex]2\frac{4}{5}=\frac{10}{5}+\frac{4}{5}=\frac{14}{5}\\\frac{14}{5}(\frac{1}{4})=\frac{14}{20}\\\frac{14}{20}=\frac{7}{10}[/tex]

Answer:7/10 or 0.7 I hope this helpful mark me brainlist if you find this correct then no if wrong

Step-by-step explanation:

2 4/5

Convert the mixed number to an improper fraction.

14/5 divide 4

14/5 times 1/4

Cancel out the greatest common factor 2

14 and 4

7/5 times 1/2

Multiply the fractions

7/10

=7/10 or 0.7

The graphs with consist of nonuniform points are not functions.

Given that,
To determine which graph is not a function.

The graph is a demonstration of curves that gives the relationship between the x and y-axis.

Here,
The only graph that cannot be a function, whose expression is not able to be determined, one example is that points are drawn non-uniformly and do not have a relation with each other, that type of relationship is not a function on a graph.

Thus, the graphs with consist of nonuniform points are not functions.

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The 95% confidence interval for the mean coding time difference is (-1.2169,2/5502) one design language is better than another.

Given that,

A computer scientist is looking into how two different design languages may make programming chores better. Twelve experienced programmers who are fluent in both languages are given the task of creating a standard function in each language, and the time taken (in minutes) is recorded.

We have to identify the 95% confidence interval for the mean coding time difference. Is there any evidence that one design language is better than another.

We know that,

The attached file's histogram demonstrates that the distribution of differences is roughly normal.

It follows that the distribution must be regular.

The 95% confident level for μ=μ₁-μ₂

We get,

=d±t(S/√n)

=0.666667±2.201(2.964436/√12)

=0.666667±2.201(0.85576)

=0.666667±1.883525474

We get (-1.2169,2.5502)

Therefore, The 95% confidence interval for the mean coding time difference is (-1.2169,2/5502) one design language is better than another.

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Answer:

95

Step-by-step explanation:

15 * 5 = 75

5 * 4 = 20

20 + 75 = 95

The volume of the container in cubic centimeters is 14.52 cubic centimeters.

Given:

if the volume of a small container is 14,520 cubic millimeters.

Volume:

Volume is defined as the space occupied within the boundaries of an object in three-dimensional space. It is also known as the capacity of the object.

we know that ,

To convert millimeters to centimeters we need to divide by 1000.

= 14,520/1000

= 1452/100

= 145.2/10

= 14.52 cubic centimeters.

Therefore The volume of the container in cubic centimeters is 14.52 cubic centimeters.

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The amount of yellow balls in the jar is 1000, with the probability.

What is probability?

By simply dividing the favorable number of possibilities by the entire number of possible outcomes, the probability of an occurrence can be determined using the probability formula. Because the favorable number of outcomes can never exceed the entire number of outcomes, the chance of an event occurring might range from 0 to 1. Mathematical explanations of the likelihood that an event will occur or that a statement is true are referred to as probabilities. A value between 0 and 1 represents the likelihood of an event, with 0 basically denoting impossibility and 1 generally indicating certainty.

in a jar there are 600 red balls and 400 green balls and an unknown amount of yellow balls.

probability is 1/5 for green ball.

The Total number of balls 1000+x

So given the probability of green is 400/1000+x = 1/5

1000+x = 5*400 = 2000

x = 2000-1000=1000

Hence the amount of yellow balls in the jar is 1000.

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Answer:

m∠QRO = 46°

Step-by-step explanation:

In the question, we are told that m∠SRO = 134°, and we are asked to calculate m∠QRO.

In order to do that, we have to realise that since angles SRO and QRO are on a straight line, their measures add up to 180°. Therefore:

∠SRO + ∠QRO = 180°

⇒ 134° + ∠QRO = 180°

⇒ ∠QRO = 180° - 134°

⇒ ∠QRO = 46°

Therefore, m∠QRO = 46°.

The equation of the function is f(x) = (-1/4)(x+10)(x-3)

The y intercept of the function = A(0, 7.5)

The zeros of the function are

-10 and 3

The equation in intercept form

y = a(x - p)(x - q)

Where the value of p = -10

The value of q = 3

Then the function will be

f(x) = a(x + 10)(x - 3)

The point A = (0, 7.5)

Substitute the values of x and y in the equation

7.5 = a(0+10)(0-3)

Do the arithmetic operation

7.5 = a(10)(-3)

Multiply the terms

7.5 = -30a

a = 7.5 / -30

Divide the terms

a = -1/4

Hence, the equation of the function is f(x) = (-1/4)(x+10)(x-3)

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The probability that exactly 10 of the citizens favor the building of the health center is;

P(X = 10) = 0.0355

This question is a binomial probability distribution question that takes the formula;

P(X = x) = ⁿCₓ * pˣ * q⁽ⁿ ⁻ ˣ⁾

Where

p = chance of success

q = chance of failure

n = number of trials

We are given;

p = 78% = 0.78

q = 1 - 0.78 = 0.22

n = 14

Thus, probability that exactly 10 of them favor the building of the health center is;

P(X = 10) = ¹⁴C₁₀ × 0.78¹⁰ × 0.22⁽¹⁴ ⁻ ¹⁰⁾

P(X = 10) = 182× 0.78¹⁰ ×  0.22⁴

P(X = 10) = 0.0355

Therefore, the probability that exactly 10 of the citizens favor the building of the health center is;

P(X = 10) = 0.0355

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the  measure that captures the variation in responses is mean and it is the weighted average

What is the meaning of mean in math?

In mathematics and statistics, the mean refers to the average of a set of values. The mean can be computed in a number of ways, including the simple arithmetic mean (add up the numbers and divide the total by the number of observations), the geometric mean, and the harmonic mean.

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Answer:

3 : 2

Step-by-step explanation:

the ratio of

length : breadth

= 15 : 10 ( divide both parts by 5 )

= 3 : 2

When one column adds up to more than 10, you regroup 10 Ones into 1 Tens

Regrouping is done by making groups of tens during operations like subtraction and addition. Regrouping means rearranging numbers into groups by place value to make it easier to carry out operations. This process is called regrouping because you're rearranging numbers into place value to carry out the process.

To regroup means to rearrange groups in place value to carry out an operation.

When one column adds up to more than 10, you regroup 10 Ones into 1 Tens. Don't put the carry over in the answer area at the bottom of the column. Write it at the top. After we carry the 1, we add all the Tens place digits, including the carry.

Therefore, when one column adds up to more than 10, you regroup 10 Ones into 1 Tens

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The number of weet to buy is 84.

We have amount given to one friend and we need to find number of weet given to all of his friends. We use unitary methods to calculate the number of weets.

Let total number of weet be X

Number of weet given to 1 friend = 3

Number of weet given to 28 friend = 28 X 3

                                                      = 84

Therefore X = 84

84 weet will be distributed among 28 friend.

Wasim wants 10 weet extra

So, total number of wee he will purchase =

Total weet given to his 28 friends + total extra weet

= 84 + 10

= 94

Hence, Waim will buy 94 weets.

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Given ages represent the consecutive integers  and sum of  Scarlett's age and five times Nasim age is 185 , then Scarlett age is equal to 30 years.

As given in the question,

Age represents the consecutive integers and Scarlett age is less than Nasim's age.

Let 'x' represent the age of Scarlett

And ' x + 1' represents the age of Nasim

As per the given condition of their ages we have,

x + 5 ( x + 1 ) = 185

⇒ x + 5x + 5 = 185

⇒ 6x + 5 = 185

⇒ 6x = 185 - 5

⇒ 6x = 180

⇒ x = 180 / 6

⇒ x = 30 years

Therefore, for the given ages represent the consecutive integers  and sum of  Scarlett's age and five times Nasim age is 185 , then Scarlett age is equal to 30 years.

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Answer: The answer is 3 3/8

Answer:

[tex]3\frac{3}{8}[/tex]

Step-by-step explanation:

turn into improper fraction first

5 1/4 ÷ 1 5/9

21/4 ÷ 14/9

now use the skip flip multiply method i told you about before

21/4 × 9/14

189/56

3 21/56

3 3/8

hopes this helps please mark brainliest

The graph is in the image uploaded.

Given equation:

y = 3x

compare this with standard equation y =mx+b

slope m = 3

y intercept b = 0

so the point (0,0)

Table:

x         y

0        0

-1       -3

-2      -6

Graphing with above table.

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Convenience sampling is commonly used in the later stages of research and it is a time-consuming process if there is a large number of respondents. So the option 3 ad 5 is correct.

In the given question we have to check which of the following is true of convenience sampling.

The given options are:

Convenience sampling is a non-probability sampling process-based sampling technique.

When sampling vast amounts of data, it is helpful and takes less time.

It prevents the researchers from determining the representativeness and is not appropriate for earlier stages of research.

Additionally, it prevents researchers from extrapolating the data they have acquired.

Hence, convenience sampling is commonly used in the later stages of research and it is a time-consuming process if there is a large number of respondents. So the option 3 ad 5 is correct.

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Addition of the fractions showed that the total amount applied is 39/10 kg

The addition of fractions is a little different from the normal addition of numbers since a fraction has a numerator and a denominator which is separated by a bar. The addition of fractions can be easily done if the denominators are equal. While like fractions have common denominators, unlike fractions are converted to like fractions to make addition easier.

In this case, we simply need to add the fraction of nitrogen, phosphorous and potassium.

This becomes;

6/3 + 2/5 + 6/4 = 2 + 2/5 + 3/2 = 39/10 = 3.9kg

The amount added is 39/10kg or 3.9kg

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Translation: 6/3 kg of Nitrogen, 2/5 kg of Phosphorus and 6/4 kg of Potassium will be applied. What is the total amount of fertilizer to be applied?

The equation of the tangent line to the curve at the point is 2y = x + 1.

Here we have to find the equation of the tangent line to the curve at the point.

The given data:

x = cosФ + sin 2Ф

y = sinФ + cos 2Ф

Now let us differentiate it, as we have to find the tangent of the curve.

dx/ dФ = -sinФ + 2 cos 2Ф

dy/ dФ = cosФ - 2sin2Ф

So we get dx/dy as:

dy/ dx = cosФ - 2 sin 2Ф / -sinФ + 2cos 2Ф

Now as it is given that Ф = 0. So putting Ф as 0 we have:

dy/ dx = cos0° - 2 sin 0° / -sin0° + 2 cos 0°

          = 1 / 2

Now we get the value of x and y by putting Ф as 0°

x = cos0° + sin 0°

 = 1

y = sin 0° + cos 0°

  = 1

So we get the equation:

y - 1 = 1/2( x-1)

2(y - 1 ) = x - 1

2y - 2 = x -1

2y = x + 1

Therefore the equation is 2y = x + 1.

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All young single mothers in that society is correct.

Given that

The findings from a study of young single mothers at a university can be generalized to the population of:

1. all young single mothers in that society

2. all young single mothers at that university

3. all single mothers in all universities

4. all young women in that university

It can be generalized to all young single mother at the University. Because the findings might not be through for adults and at the same time might not be through for those outside the University.

Hence the answer is all young single mothers in that society is correct.

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The rule of obtuse angle is that one angle measures more than 90° and total sum og angle should be 180°.

Acute, obtuse, right, straight, reflex, and complete rotation are some of the terms used to describe fundamental angles. Two rays are joined at their termini to form the geometric shape known as an angle. The most common way to express an angle is in degrees.

A measure of an angle or the amount of turning required to bring one line or plane into coincidence with or parallel to another angled is represented by two lines extending from the same point.

A triangle is said to have an obtuse angle if one of the inner angles is greater than 90 degrees. If one of the angles of an obtuse triangle is greater than 90°, then the total of the other two angles is also less than 90°.

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