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What is the probability of the sample mean

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Reference no: EM132918270

According to a report from a business intelligence? company, smartphone owners are using an average of 21 apps per month. Assume that number of apps used per month by smartphone owners is normally distributed and that the standard deviation is 3.

if you select a random sample of 16 smartphone? owners, what is the probability that the sample mean is between 20 and 21?

Reference no: EM132918270

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