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A courier company claims that its mean delivery time to any place in New York City is less than three hours. The quality control personnel

A courier company claims that its mean delivery time to any place in New York City is less than three hours. The quality control personnel randomly select 50 deliveries and compute the mean delivery time to be 3.2 hours with a standard deviation .6 hours. Estimate the true average delivery time using a 96% confidence interval. Round to two decimal places. Based on the confidence interval, does the company's claim appear reasonable?

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