A random sample of 16 pharmacy customers showed the waiting

Reference no: EM13240739

A random sample of 16 pharmacy customers showed the waiting times below (in minutes). Find a 90 percent confidence interval for Î¼, assuming that the sample is from a normal population.

21 22 22 17 21 17 23 20

20 24 9 22 16 21 22 21

Reference no: EM13240739

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