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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?

(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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