Question: Please answer Minitab step by step... a) The manager of a car rental company wants to estimate the average number of times luxury cars would

Please answer Minitab step by step...

Please answer Minitab step by step... a) The

a) The manager of a car rental company wants to estimate the average number of times luxury cars would be rented a month. She takes a random sample of 19 cars that produces the following number of times those cars are rented in a month. Result: 3, 7, 12, 5, 9, 13, 2, 8, 6, 14, 6, 1, 2, 3, 2, 5, 11, 13, 5 She wants to use these data to construct a 95 percent confidence interval to estimate the average. Construct the confidence interval for the mean. (5M) b) Kolda Automotive receives gaskets for its engines from two suppliers. The QA manager wants to compare the variance in thickness of the gaskets with a = 0.05. He takes a sample of 10 gaskets from supplier A and 12 from supplier B and obtains a standard deviation of 0.087 from A and 0.092 from B. Comment on the variance of thickness of the gaskets supplied by the both the suppliers. (5M)

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