An Infinite Population Has a Mean of 120 and a Standard

question 50

Essay

An infinite population has a mean of 120 and a standard deviation of 44. A sample of 100 observations is to be selected at random from the population.
a. What is the expected value of the sample mean?
b. What is the standard deviation of the sample mean?
c. What is the shape of the sampling distribution of the sample mean?
d. What does the sampling distribution of the sample mean show?

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