MK 332 Homework April 1, 2020 Q2. A company wants to know how long newly hired...

MK 332 Homework April 1, 2020

Q2. A company wants to know how long newly hired MBAs remain on their first jobs. A sample of 17 MBAs has an average of 3 years, with a standard deviation of 2. Create a Confidence Interval with Confidence level of 95%. Interpret.

Q1. A Pizza Hut store manager believes that the average number of customers who return a pizza or ask for a refund is 20 per day. The store records the number of returns and exchanges for the 25 days it was open during a given month. Are the returns different than 20 per day?

Sample mean= 25, s=5, n=25. Test at α = .01.

H0: µ = 20

H1: µ ≠ 20

Test by both methods, interpret and conclude.

Expert Solution

orchestra answered 1 year ago

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