t the null hypothesis (a-4) Is the true mean mpg lower for the Ford Fusion? multiple choice 3 Yes No
The average mpg usage for a 2017 Toyota Prius for a sample of 7 tanks of gas was 43.5 with a standard deviation of 1.8. For a 2017 Ford Fusion, the average mpg usage for a sample of 7 tanks of gas was 39.9 with a standard deviation of 2.0.
Assuming equal variances, at α = .05, is the true mean mpg lower for the Ford Fusion?
(a-1) Choose the appropriate hypotheses.
- H0: μtoy – μford ≤ 0 vs. H1: μtoy – μford > 0. Reject H0 if tcalc > 1.782
- H0: μtoy – μford ≤ 0 vs. H1: μtoy – μford > 0. Reject H0 if tcalc < 1.782
- H0: μtoy – μford ≥ 0 vs. H1: μtoy – μford < 0. Reject H0 if tcalc < – 1.782
- H0: μtoy – μford ≥ 0 vs. H1: μtoy – μford < 0. Reject H0 if tcalc > – 1.782
multiple choice 1
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a
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b
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c
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d
(a-2) Calculate the tcalc. (Round your answer to 4 decimal places.)
tcalc ________
(a-3) Based on the tcalc determined, choose the correct decision.
multiple choice 2
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Fail to reject the null hypothesis
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Reject the null hypothesis
(a-4) Is the true mean mpg lower for the Ford Fusion?
multiple choice 3
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Yes
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No
(b) Calculate the p-value using Excel. (Round your answer to 4 decimal places.)
p-value _______
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