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Find probability of random sample batteries in mean talk

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Reference no: EM13114371

Suppose the "talk time" in a digital mode on a Motorola Timeport is normally distributed with a mean of 324 min. and standard deviation of 24 min. What is the probability that a random sample of n=15 batteries results in a mean talk time of at least 330 minutes?

Reference no: EM13114371

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