Use the web calculator (assume scores normally distributed) to determine what percent of a group with...

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Use the web calculator (assume scores normally distributed) to determine what percent of a group with...

Use the web calculator (assume scores normally distributed) to determine what percent of a group with a 50 yard dash mean = 8.0 seconds and Sx = .75 seconds scored better than a dash time of 7.7.

URL to web calculator: http://davidmlane.com/hyperstat/z_table.html

A.) 66%

B.) 40%

C.)correct answer not given

D.) 34%

math Statistics-And-Probability

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Answer 1

Answer #1

Now ,

; From the standard normal probability table

Correct option is (A)

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Answer 2

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