Hat is the probability that the sample mean will exceed 104
A population has a normal distribution with a mean of 98 and a standard deviation of 12. If 9 measurements are randomly selected from this population, what is the probability that the sample mean will exceed 104?
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Collete is self-employed, selling stamps at home parties. She wants to estimate the average amount a client spends at each party. A random sample of 35 clients' receipts gave a mean of $34.70 with standard deviation s= $4.85.
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