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Author Question: Determine P(-2.45 z 1.69), assuming a standard normal ... (Read 34 times)

jenna1

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on: Jun 24, 2018
Determine P(-2.45  z  1.69), assuming a standard normal distribution.

Question 2

The amount of time spent by American adults playing sports per day is normally distributed with a mean of 4 hours and standard deviation of 1.25 hours. Find the probability that if four American adults are randomly selected, their average number of hours spent playing sports is more than 5 hours per day.


jointhecircus

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Reply #1 on: Jun 24, 2018
Answer to Question 1

0.9474

Answer to Question 2

0.0548


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