Question
A quality control expert at LIFE batteries wants to test their new batteries. The design engineer claims they have a standard deviation of 86
A quality control expert at LIFE batteries wants to test their new batteries. The design engineer claims they have a standard deviation of 86 minutes with a mean life of 505 minutes, If the claim is true, in a sample of 120 batteries, what is the probability that the mean battery life would be greater than 523.8 minutes? Round your answer to four decimal places.
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Elementary Statistics Picturing The World
Authors: Ron Larson, Betsy Farber
6th Edition
0321911210, 978-0321911216
