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Random Samples of Tuesday and Friday Withdrawals from a College-Campus

Question 17

Essay

Random samples of Tuesday and Friday withdrawals from a college-campus ATM were compared to see whether or not there was a difference in the means. The results shown below are from MegaStat. Analyze these results thoroughly.
Hypothesis Test: Independent Groups (t-test, unequal variance)

FridayTuesday82.4041.00mean75.3535.53std.dev.2520n\begin{array}{|r|r|r|}\hline Friday & Tuesday\\\hline 82.40 & 41.00 &mean\\\hline 75.35 & 35.53&std. dev. \\\hline 25 & 20 & n\\\hline\end{array}

3535 \quad \quad \quad df
41.40041.400 \quad difference (Friday - Tuesday)
17.03517.035 \quad standard error of difference
0 \quad \quad \quad hypothesized difference
2.4302.430 \quad \quad t
.0204.0204 \quad p-value (two-tailed)

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The test statistic (t = 2.430) and p-va...

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