Question

Automobile repair costs continue to rise with and average cost now at $367 per repair. Assume that the cost for an automobile repair has a standard deviation of $88.

Answer 1

Automobile repair costs continue to rise with the average cost now at $367 per repair (U.S. News & World Report website, January 5, 2015). Assume that the cost for an automobile repair is normally distributed with a standard deviation of $88. Answer the following questions about the cost of automobile repairs. Use Table 1 in Appendix B.

a. What is the probability that the cost will be more than $450 (to 4 decimals)?

b. What is the probability that the cost will be less than $250
(to 4 decimals)?

c. What is the probability that the cost will be between $250 and $450 (to 4 decimals)?

d. If the cost for your car repair is in the lower 5% of automobile repair charges, what is your cost (to 2 decimals)?
a. 0.1728

b. 0.0918

c. 0.7354

d. $222.25

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