IDS 371 CA#2.docx - IDS 371 Computer Assignment 2 Question 1 1 out of 1 points A small dealership leased 21 outbacks on 2-year leases When the cars were

IDS 371 CA#2.docx - IDS 371 Computer Assignment 2 Question...

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IDS 371 Computer Assignment # 2 Question 1 1 out of 1 points A small dealership leased 21 outbacks on 2-year leases. When the cars were returned at the end of the lease, the mileage was recorded [mileage.txt]. Is the dealer's mean significantly greater than the national average for 2-year leases, which is 30,000? Which of the following is the appropriate hypothesis to test? Selected Answer: H 0 : μ ≤ 30,000 H 1 : μ > 30,000 Answers: H 0 : μ ≤ 30,000 H 1 : μ > 30,000 H 0 : μ ≥ 30,000 H 1 : μ < 30,000 H 0 : μ = 30,00 0 H 1 : μ ≠ 30,000 None of the above Question 2 1 out of 1 points Run the following code in R to test the hypothesis in question #1 at α =0.10: t.test(Mileage,mu=30000,alternative="greater",conf.level = 0.9) . What is the test statistic? Selected Answer: 1.525 3 Answers: 20 1.525 3 0.071 43 30,00 0 Question 3 1 out of 1 points According to the t-test output from question #2, what is the p-value?
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Selected Answer: 0.071 43 Answers: 1.525 3 0.064 51 0.103 45 0.071 43 Question 4 1 out of 1 points According to the t-test output from question #2, the decision is: Selected Answer: Reject the null hypothesis as p-value < 10%.
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