Question: 8.2 Number 3b ***** what data do you need? Annual Premium 1911 3119 2380 2732 2554 2921 2680 2591 2620 2600 2377 2830 2958 2531

8.2 Number 3b ***** what data do you need?
Annual Premium
1911
3119
2380
2732
2554
2921
2680
2591
2620
2600
2377
2830
2958
2531
2686
2114
2526
2161
2390
2453

The average annual premium for automobile insurance in the United States is $1571. A representative sample of annual premiums for the state of Michigan is contained in the Excel Online file below. Assume the population is approximately normal. Construct a spreadsheet to answer the following questions.

a. Provide a point estimate of the mean annual automobile insurance premium in Michigan.

$_________ (to the nearest dollar)

b. Develop a 95% confidence interval for the mean annual automobile insurance premium in Michigan.

($_______ , $________) (to the nearest cent)

c. What is your interpretation of the relationship between auto insurance premiums in Michigan and the national average?

We would be __________% confident that auto insurance premiums in Michigan are above the national average.

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