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Ch15_Sect03_Keller MS_AISE TB

# Ch15_Sect03_Keller MS_AISE TB - CHAPTER 15 SECTION 3...

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CHAPTER 15 SECTION 3: CHI-SQUARED TESTS MULTIPLE CHOICE 119. If we want to conduct a two-tail test of a population proportion, we can employ: a. z -test of a population proportion. b. the chi-squared test of a binomial experiment since z 2 = 2 . c. the chi-squared test of a contingency table. d. Both a and b ANS: D PTS: 1 REF: SECTION 15.3 120. If we want to conduct a one-tail test of a population proportion, we can employ: 121. Which statistical technique is appropriate when we describe a single population of qualitative data with exactly two categories? 122. The chi-squared distribution is used in: 123. Which of the following statements is true for chi-squared tests? a. Testing for equal proportions is identical to testing for goodness-of-fit. b. The number of degrees of freedom in a test of a contingency table with r rows and c columns is ( r 1)( c 1). c. The number of degrees of freedom in a goodness-of-fit test with k categories is k 1. d. All of these choices are true. ANS: D PTS: 1 REF: SECTION 15.3 124. Which of the following tests does not use the chi-squared distribution? 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.

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125. Which statistical technique is appropriate when we compare two or more populations of qualitative data with two or more categories?
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