Statistics Solutions

[Step-by-Step] Two different models of cars were tested for gas mileage. Test the claim that the models have the same gas mileage at the .05 level. Assume

Question: Two different models of cars were tested for gas mileage. Test the claim that the models have the same gas mileage at the .05 level. Assume the variances to be unequal. State the hypotheses and identify the claim, find the critical value(s), compute the test value, make the decision and summarize the results.

Car A Car B

nl = 9 n2 = 13

\(\bar{X}\) = 28.6 \(\bar{X}\) = 32.1

s1= 4.1 s2= 2.1

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