Question: Solve a) 9) In a random sample of 25 direct flights from New York to Boston by Hawk Hummingbird Airline, the sample mean flight time

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a) 9) In a random sample of 25 direct flights from New York to Boston by Hawk Hummingbird Airline, the sample mean flight time was 56 minutes and the sample standard deviation was 8 minutes. (Assume the flight times are approximately normally distributed.) Construct a 98% confidence interval for the overall mean flight time on this route. Test whether the actual overall mean flight time on this route is 1 hour (60 minutes) or it is different at 5% significance level

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