2. Apple's Mac computer batteries last for 7 hours on a single charge with a standard deviation of 20 minutes. A new supplier offers them a battery that they say will have increased battery life. A random sampling of twelve of the new batteries are tested and found to have a sample mean of 7 hours and 22 minutes and a sample standard deviation of 34 minutes. Does this new battery match the company's claim (to 95% confidence)? Perform a hypothesis test, showing all steps.

2. Apple's Mac computer batteries last for 7 hours on a single charge with a standard deviation of 20 minutes. A new supplier offers them a battery that they say will have increased battery life. A random sampling of twelve of the new batteries are tested and found to have a sample mean of 7 hours and 22 minutes and a sample standard deviation of 34 minutes. Does this new battery match the company's claim (to 95% confidence)? Perform a hypothesis test, showing all steps.

Calculus For The Life Sciences

2nd Edition

ISBN:9780321964038

Author:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.

Publisher:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.

Chapter13: Probability And Calculus

Section13.2: Expected Value And Variance Of Continuous Random Variables

Problem 10E

See similar textbooks