Essentials of Modern Business Statistics with Microsoft Excel 8th Edition Test Bank

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Chapter 09: Hypothesis Tests Multiple Choice 1. More evidence against H0 is indicated by _____. a. lower levels of significance b. smaller p-values c. smaller critical values d. lower probabilities of a Type II error ANSWER: b 2. Two approaches to drawing a conclusion in a hypothesis test are _____. a. p-value and critical value b. one-tailed and two-tailed c. Type I and Type II d. null and alternative ANSWER: a 3. As a general guideline, the research hypothesis should be stated as the _____. a. null hypothesis b. alternative hypothesis c. tentative assumption d. hypothesis the researcher wants to disprove ANSWER: b 4. A Type I error is committed when _____. a. a true alternative hypothesis is not accepted b. a true null hypothesis is rejected c. the critical value is greater than the value of the test statistic d. sample data contradict the null hypothesis ANSWER: b 5. Which of the following hypotheses is not a valid null hypothesis? a. H0: µ ≤ 0 b. H0: µ ≥ 0 c. H0: µ = 0 d. H0: µ < 0 ANSWER: d 6. The practice of concluding “do not reject H0” is preferred over “accept H0” when we _____. a. are conducting a one-tailed test b. are testing the validity of a claim c. have an insufficient sample size d. have not controlled for the Type II error Copyright Cengage Learning. Powered by Cognero.

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