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It has been found that time taken by people to navigate, find, and complete a purchase order at an online bookstore follows a normal distribution.
It has been found that time taken by people to navigate, find, and complete a purchase order at an online bookstore follows a normal distribution. (We shall refer to this process simply as a connection.) A random sample of 45 connections gives a sample mean of 15.3 minutes with a sample standard deviation of 6.7 minutes. (a) (4 points) Give a 95% confidence interval for the true average time per connection
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