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Exam Name___________________________________ MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) Determine whether the alternative hypothesis is left-tailed, right-tailed, or two-tailed. μ = 11 μ > 11 1) _______ A) left-tailed B) right-tailed C) two-tailed 2) Determine whether the outcome is a Type I error, a Type II error, or a correct decision. A test is made of μ = 7 versus μ ≠7. The true value of μ is 5 and is rejected. 2) _______ A) Type I error B) Type II error C) Correct decision 3) Determine whether the outcome is a Type I error, a Type II error, or a correct decision. A test is made of μ = 18 versus μ ≠18. The true value of μ is 18 and is not rejected. 3) _______ A) Correct decision B) Type I error C) Type II error 4) A new organic pest control formula is being tested on potato plants to see whether it can reduce the level of potato beetle infestation. The mean number of beetles per untreated plant is 5. It is hoped that the new formula may reduce this infestation rate. State the appropriate null and alternate hypotheses. 4) _______ A) μ < 5> 5 B) μ = 5, μ ≠5 C) μ = 5, μ < 5 xss=removed> 258 B) μ = 260, μ > 260 C) μ = 260, μ ≠260 D) μ > 258, μ = 258 6) A sample of 75 chewable vitamin tablets have a sample mean of 251 milligrams of vitamin C. Nutritionists want to perform a hypothesis test to determine how strong the evidence is that the mean mass of vitamin C per tablet differs from 256 milligrams. State the appropriate null and alternate hypotheses. 6) _______ A) μ = 251, μ ≠251 B) μ ≠251, μ = 251 C) μ ≠256, μ =
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