johnjackrobinso8385 johnjackrobinso8385

23-12-2022
Physics

Answered

Suppose that Energizer makes AA batteries that, when placed in an electronic device, have a lifetime that is normally distributed with a mean of 360 minutes and a standard deviation of 25 minutes. (a) What is the 90th percentile of AA battery life? ( 2pts ) (b) If 5 batteries are randomly selected, what is the probability that at least one of the five lasts less than 330 minutes? (3 pts)

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