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A) A study was done for a company. On average, customers spend 25 minutes in the...

A) A study was done for a company. On average, customers spend 25 minutes in the store, with standard deviation of 10 minutes. Assume the standard deviation is from a population that is normally distributed. If a random sample of 16 customers were chosen, what is the probability that they will spend 21.075 minutes or less?

B)  what is the probability that a random sample of 25 customers would spend more than 26.5 minutes?

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