(Answered) Suppose a random sample of n 49 observations is selected

Statistics

Suppose a random sample of n = 49 observations is selected from a population that has normal distribution with mean 106 and standard deviation 12.

a) Give the mean and the standard deviation of the sample mean X.

b) Find the probability that X (the mean) exceeds 110.

c) Find the probability that the sample mean deviates from the population mean by less than 4

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