Probability based on central limit theorem

Reference no: EM1318722

The information of the American Institute of Insurance indicates the average or median quantity of life insurance per family in the US is $110,000. This distribution has a positive slant. The standard deviation of the population is not known. A chance sample of 50 families revealed an average or median of $112,000 and a standard deviation of $40,000. What is the standard error of the average or median?

a) Suppose that you select a 50 families sample. Which is the form expected from the distribution of the average or median of the sample?

b)Which is the probability of selecting a sample with an average or median greater than $112,000?

c) Which is the probability of selecting a sample with an average or median greater than $100,000?

d) Find the probability of selecting a sample with an average or median greater than $100,000 but less than $112,000.

Reference no: EM1318722

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