Refer to Exercise 12. Assume that the cost of an engine repair is $50, and the cost

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Refer to Exercise 12. Assume that the cost of an engine repair is $50, and the cost of a transmission repair is $100. Let T represent the total cost of repairs during a one-hour time interval.

a. Find μT.

b. Find σT.

c. Find P(T = 250).

Refer to Exercise 12.

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