Male and female students in a finance class were asked how much their last tank of gas cost. Can you conclude that on average males spent more on gas than females?

(a) State the hypotheses for this test.

(b) Show the calculation of the test statistic, assuming unequal population variances.

(c) State the decision rule, using α = .01 and the quick rule for degrees of freedom.

(d) Draw the conclusion.

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Males R 343.20 s$8.30 D 13 Females X2# $36.60 s2 $3.10 229