7) Automobile Repair Costs. Automobile repair costs continue to rise with an average 2015 cost of $367 per repair ( U.S. News & World Report website). Assume that the cost for an automobile repair is...

7)

Automobile Repair Costs.
Automobile repair costs continue to rise with an average 2015 cost of $367 per repair (U.S. News & World Report
website). 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.

1. What is the probability that the cost will be more than $450?


2. What is the probability that the cost will be less than $250?


3. What is the probability that the cost will be between $250 and $450?