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Unformatted text preview: CHAPTER 11 SECTION 1: INTRODUCTION TO HYPOTHESIS TESTING MULTIPLE CHOICE 1. The probability of a Type I error is denoted by: a. b. 1  c. d. 1  ANS: C PTS: 1 REF: SECTION 11.1 2. A Type I error is committed if we make: a. a correct decision when the null hypothesis is false. b. a correct decision when the null hypothesis is true. c. an incorrect decision when the null hypothesis is false. d. an incorrect decision when the null hypothesis is true. ANS: D PTS: 1 REF: SECTION 11.1 3. A Type II error is committed if we make: a. a correct decision when the null hypothesis is false. b. a correct decision when the null hypothesis is true. c. an incorrect decision when the null hypothesis is false. d. an incorrect decision when the null hypothesis is true. ANS: C PTS: 1 REF: SECTION 11.1 4. A professor of statistics refutes the claim that the average student spends 3 hours studying for the midterm exam. She thinks they spend more time than that. Which hypotheses are used to test the claim? a. H : 3 vs. H 1 : 3 b. H : = 3 vs. H 1 : 3 c. H : 3 vs. H 1 : = 3 d. H : = 3 vs. H 1 : &lt; 3 ANS: A PTS: 1 REF: SECTION 11.1 5. The hypothesis of most interest to the researcher is: a. the alternative hypothesis. b. the null hypothesis. c. both hypotheses are of equal interest. d. Neither hypothesis is of interest. ANS: A PTS: 1 REF: SECTION 11.1 6. A spouse suspects that the average amount of money spent on Christmas gifts for immediate family members is above $1,200. The correct set of hypotheses is: a. H : = 1200 vs. H 1 : &lt; 1200 b. H : 1200 vs. H 1 : = 1200 c. H : = 1200 vs. H 1 : 1200 d. H : &lt; 1200 vs. H 1 : = 1200 ANS: C PTS: 1 REF: SECTION 11.1 This edition is intended for use outside of the U.S. only, with content that may be different from the U.S. Edition. This may not be resold, copied, or distributed without the prior consent of the publisher. 7. Which of the following conclusions is not an appropriate conclusion from a hypothesis test? a. Reject H . Sufficient evidence to support H 1 . b. Fail to reject H . Insufficient evidence to support H 1 . c. Accept H . Sufficient evidence to support H . d. All of these choices are true. ANS: C PTS: 1 REF: SECTION 11.1 8. A Type I error occurs when we: a. reject a false null hypothesis. b. reject a true null hypothesis. c. don't reject a false null hypothesis. d. don't reject a true null hypothesis. ANS: B PTS: 1 REF: SECTION 11.1 9. A Type II error is defined as: a. rejecting a true null hypothesis. b. rejecting a false null hypothesis. c. not rejecting a true null hypothesis. d. not rejecting a false null hypothesis. ANS: D PTS: 1 REF: SECTION 11.1 10. The probability of a Type II error is denoted by: a....
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 Spring '11
 Kim
 Probability, Null hypothesis, Statistical hypothesis testing, Type I and type II errors

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