Fast Auto Service provides oil and lube service for cars. It is known that the mean time taken for oil and lube service at this garage is 15 minutes per car and the standard deviation is 2.4 minutes. The management wants to promote the business by guaranteeing a maximum waiting time for its customers. If a customer's car is not serviced within that period, the customer will receive a 50 % discount on the charges. The company wants to limit this discount to at most 4% of the customers. What should the maximum guaranteed waiting time be? Assume that the times taken for oil and lube service for all cars have a normal distribution. Round your answer to the nearest minute. The maximum guaranteed waiting time should be approximately minutes. eTextbook and Media Save for Later Attempts: 0 of 5 used Submit Answer

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Fast Auto Service provides oil and lube service for cars. It is known that the mean time taken for oil and lube service at this garage is 15
minutes per car and the standard deviation is 2.4 minutes. The management wants to promote the business by guaranteeing a
maximum waiting time for its customers. If a customer's car is not serviced within that period, the customer will receive a 50 %
discount on the charges. The company wants to limit this discount to at most 4% of the customers. What should the maximum
guaranteed waiting time be? Assume that the times taken for oil and lube service for all cars have a normal distribution.
Round your answer to the nearest minute.
The maximum guaranteed waiting time should be approximately i
minutes.
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Transcribed Image Text:Question 6 of 6 - /2 E View Policies Current Attempt in Progress Fast Auto Service provides oil and lube service for cars. It is known that the mean time taken for oil and lube service at this garage is 15 minutes per car and the standard deviation is 2.4 minutes. The management wants to promote the business by guaranteeing a maximum waiting time for its customers. If a customer's car is not serviced within that period, the customer will receive a 50 % discount on the charges. The company wants to limit this discount to at most 4% of the customers. What should the maximum guaranteed waiting time be? Assume that the times taken for oil and lube service for all cars have a normal distribution. Round your answer to the nearest minute. The maximum guaranteed waiting time should be approximately i minutes. eTextbook and Media Save for Later Attempts: 0 of 5 used Submit Answer 50 e Type here to search
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