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A random sample of 16 pharmacy customers showed the waiting times below (in minutes).Find a 90 percent confidence interval for , assuming that the sample

A random sample of 16 pharmacy customers showed the waiting times below (in minutes).Find a 90 percent confidence interval for , assuming that the sample is from a normal population

18 23 20 15 24 22 25 17
26 11 19 25 23

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