A sample of 16 ATM transactions shows a mean transaction
A sample of 16 ATM transactions shows a mean transaction time of 67 seconds with a standard deviation of 12 seconds.
(a) State the hypotheses to test whether the mean transaction time exceeds 60 seconds.
(b) Find the test statistic.
(c) At α = .025, what is the critical value for this test?
(d) What is your conclusion?
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