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mylen [45]
3 years ago
11

Suppose the number of dropped footballs for a wide receiver, over the course of a season, are normally distributed with a mean o

f 16 and a standard deviation of 2.
What is the z-score for a wide receiver who dropped 13 footballs over the course of a season?

A. −3
B. −1.5
C. 1.5
D. 3
Mathematics
2 answers:
dexar [7]3 years ago
6 0
The z-score is -1.5.

The formula to calculate a z-score is:
z=\frac{X-\mu}{\sigma}

where X is the value we're calculating the z-score for, μ is the mean and σ is the standard deviation.

Using our information we have:
z=\frac{13-16}{2}=\frac{-3}{2}=-1.5
densk [106]3 years ago
4 0

Answer:

-1.5

Step-by-step explanation:

took the test

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PLEASE HELP ME OUT !!! WILL APPRECIATE IT SO MUCH !!
mash [69]
Start with the general formula. The key word is difference. So the general formula is 

D(x) = W(x) - R(x) Now substitute in the values for W(x) and R(x)
D(x) = 0.002x^3 - 0.01x^2 - (x^2 - 4x  + 13) Be very careful about the sign in front of the brackets.

D(x) = 0.002x^3 - 0.01x^2 - x^2 + 4x - 13 Do you see what that minus sign did? It affected all 3 terms.

D(x) = 0.002x^3 - 1.01x^2 + 4x - 13 <em>Note: -0.01 - 1x^2 = - 1.01 x^2</em>
That gives you a clear cut answer

C<<<<< answer.

That sign is the worst part of the question. Make sure you understand what it did.
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Which of the following represents factorization of the binomial below?<br> x^2-81
Katena32 [7]

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Step-by-step explanation:

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For which interval is the average rate of change of f(x) negative? On a coordinate plane, a function starts from above quadrant
Harlamova29_29 [7]

The interval for which the average rate of change of f(x) is negative is; from x = 0 to x = 2.5.

For the average rate of change of f(x) to be negative, it means that the change in y and the change in x must have opposite signs.

For example, if the change in y is negative, them the change in x must be positive.

Similarly, if the change in y is positive, then change in x must be negative.

Now, the graph showing this quadratic function is missing and so i have attached it.

From the graph, the only interval at which the rate of change for y and x have opposite signs is from x = 0 to x = 2.5.

In this interval, we see that x is increasing from 0 to 2.5 which is positive change while y is decreasing from 1 to -3 which is negative change.

Read more about average rate of change at;brainly.com/question/8728504

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3 years ago
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