Cash withdrawals from a college credit union for a random
Cash withdrawals from a college credit union for a random sample of 30 Fridays and 30 Mondays are shown. At 5 .01, is there a difference in the mean withdrawal on Monday and Friday?
(a) Make stacked dot plots of the data (a sketch is OK).
(b) State the hypotheses.
(c) State the decision rule and sketch it.
(d) Find the test statistic.
(e) Make a decision.
(f) Find the p-value and interpret it.
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