Question

Consider observations of the number of wins per season by National Football League teams over the...

Consider observations of the number of wins per season by National Football League teams over the years 1989-2008. The observed mean is 8 wins/season and the observed standard deviation is 3.02. A histogram illustrates these data.

Referring to these NFL data the z-score for 11 wins is?

Group of answer choices

a. None of these options

b. 1.32

c. 0.33

d. 0.99

e. 0.66

Math   Statistics-And-Probability   
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Homework Answers

Answer #1

Answer - d. 0.99

Explanation:

Let X denote the number of wins per season by National Football League teams over the years 1989-2008 such that

    

Now Z-Score is given as:

  

where X is Raw Score.

Here, we want to calculate the Z-Score for X = 11 wins, so using above formula

  

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