Mathematics, 30.04.2021 17:40 alex7881
A phone manufacturer would like to test the battery capabilities of their new phones by playing a video on loop and measuring how much time it takes for the phones to run out of battery. Sixty phones underwent these tests, and it was found out that they run of juice on an average of 505.0 minutes with a sample standard deviation of 6.7 minutes. With a confidence level of 99 percent, solve for the confidence interval to estimate the population mean.
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Answers: 2
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