Suppose that the mean income of people in a region is $35,000 with a standard deviation of $6,000. It is known that the population is unimodal and symmetric. For a sample of size 25,
a. Describe the sampling distribution of the sample mean.
b. What is the probability of obtaining from a sample of 25 people an average income that is above $37,000?

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The Answer of Suppose that the mean income of people in a region is $35,000 with a standard deviation of $6,000. It is known that the population is unimodal and symmetric. For a sample of size 25,
a. Describe the sampling distribution of the sample mean.
b. What is the probability of obtaining from a sample of 25 people an average income that is above $37,000?

Suppose That the Mean Income of People in a Region