Max Auto Sales is considering offering a special service contract that will cover the total cost of any service work required on leased vehicles. Service costs are approximately normally distributed with a mean of u and a standard deviation of RM 25. (i) If only 3% of the service cost is less than RM103, find the mean service cost. (ii) What is the probability that the service cost will be between RM130 and RM160 for a year? (iii) If the company offers the service contract to customers for a charge of RM180, what is the probability that any one customer’s service costs will exceed the contract price of RM180?

A First Course in Probability (10th Edition)
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ISBN:9780134753119
Author:Sheldon Ross
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Max Auto Sales is considering offering a special service contract that will cover the total cost of any service work required on leased vehicles. Service costs are approximately normally distributed with a mean of u and a standard deviation of RM 25.

(i) If only 3% of the service cost is less than RM103, find the mean service cost.

(ii) What is the probability that the service cost will be between RM130 and RM160 for a year?

(iii) If the company offers the service contract to customers for a charge of RM180, what is the probability that any one customer’s service costs will exceed the contract price of RM180?

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