Question

While on Hot In Cleveland, Betty White was part of 2 live episodes. Not surprisingly, this increased her stress level. What about other actors? Stress scores follow a normal distribution with a mean of 3 and a standard deviation of 1.15. If a sample of 25 actors are taken, what is the probability that their average stress score is above 3.1?

Answer 1

Solution:

Probability that their average stress score is above 3.1 is 0.3336

Explanation:

Given that,

Stress scores follow a normal distribution with a mean of 3 and a standard deviation of 1.15

If a sample of 25 actors are taken, then the probability that their average stress score is above 3.1 is given by,

is given by,

(By using standard normal table)

PLEASE RATING THE ANSWER. THANK YOU.....!!!!