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D h0 the distribution of the residential home selling

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Unformatted text preview: At a significance level of .05, we: A. Reject H0 and conclude the residential home selling prices are not distributed according to normal distribution. B. Failed to reject H0 and conclude the residential home selling prices are not distributed according to normal distribution. C. Reject H0 and conclude the residential home selling prices are distributed according to normal distribution. D. Failed to reject H0 and conclude the residential home selling prices are distributed according to normal distribution. AACSB: Reflective Thinking Bloom's: Comprehension Difficulty: Medium Learning Objective: 2 Topic: Chi-Square 1-1093 Chapter 01 - An Introduction to Business Statistics 42. In performing a chi-square goodness of fit test for a normal distribution, if there are 7 intervals, then the degrees of freedom for the chi-square statistic is ______________. A. 7 B. 3 C. 4 D. 6 7-3=4 AACSB: Analytic Bloom's: Application Difficulty: Easy Learning Objective: 2 Topic: Chi-Square 43. The number of degrees of freedom associated with a chi-square test for independence based upon a contingency table with 4 rows and 3 columns is _____. A. 7 B. 12 C. 5 D. 6 (4 - 1) (3 - 1) = 6 AACSB: Analytic Bloom's: Application Difficulty: Easy Learning Objective: 2 Topic: Chi-Square 1-1094 Chapter 01 - An Introduction to Business Statistics 44. An experiment consists of 400 observations, and four mutually exclusive groups. If the probability of a randomly selected item being classified into any of the four groups is equal, then the expected number of items that will be classified into group 1 is _____. A. 25 B. 100 C. 125 D. 150 (.25)(400) = 100 AACSB: Analytic Bloom's: Application Difficulty: Easy Learning Objective: 1 Topic: Chi-Square 45. The chi-square goodness of fit test for multinomial probabilities with 5 categories has _____ degrees of freedom. A. 5 B. 4 C. 3 D. 6 5-1=4 AACSB: Analytic Bloom's: Application Difficulty: Medium Learning Objective: 1 Topic: Chi-Square 1-1095 Chapter 01 - An Introduction to Business Statistics 46. While a binomial distribution describes a count data that can be classified into one of two mutually exclusive categories, ______________________ distribution describes count data that is classified into more than two mutually exclusive categories. A. normal B. skewed C. uniform D. multinomial AACSB: Reflective Thinking Bloom's: Knowledge Difficulty: Medium Learning Objective: 1 Topic: Chi-Square 47. In performing chi-square goodness fit test for a normal distribution, a researcher wants to make sure that all of the expected cell frequencies are at least five. The sample is divided into 7 intervals. The second through the sixth interval all have expected cell frequencies of at least five. The first and the last intervals have expected cell frequencies of 1.5 each. After adjusting the number of intervals, degrees of freedom for the chi-square statistic is ____. A. 2 B. 3 C. 5 D. 7 AACSB: Analytic Bloom's: Application Difficulty: Hard Learning Objective: 2 Topic: Chi-Square 48. As the difference between observed frequency and expected frequency _______________, the probability of rejecting the null hypothesis increases. A. stays the same B. decreases C. increases D. go to 0 AACSB: Reflective Thinking Bloom's: Comprehension Difficulty: Medium Learning Objective: 1 Topic: Chi-Square 1-1096 Chapter 01 - An Introduction to Business Statistics 49. In performing a chi-square test of independence, as the difference between respective observed and expected frequencies _________, the probability of concluding that the row variable is independent of the column variable increases. A. stay the same B. decrease C. increase D. double AACSB: Reflective Thinking Bloom's: Comprehension Difficulty: Medium Learning Objective: 3 Topic: Chi-Square 50. In performing a chi-square goodness of fit test with multinomial probabilities, the ___________ the difference between observed and expected frequencies, the higher the probability of concluding that the probabilities specified in the null hypothesis is correct. A. larger B. smaller AACSB: Reflective Thinking Bloom's: Comprehension Difficulty: Medium Learning Objective: 1 Topic: Chi-Square 51. A special version of the chi-square goodness of fit test that involves testing the null hypothesis that all of the multinomial probabilities are equal is called the test for ___________. A. goodness of fit B. statistical independence C. normality D. homogeneity AACSB: Reflective Thinking Bloom's: Knowledge Difficulty: Medium Learning Objective: 1 Topic: Chi-Square 1-1097 Chapter 01 - An Introduction to Business Statistics 52. Consider the 3X2 contingency table below. Compute the expected frequencies in row 1. A. 16, 14 B. 20, 30 C. 12, 18 D. 15, 15 AACSB: Analytic Bloom's: Application Difficulty: Medium Learning Objective: 1 Topic: Chi-Square 1-1098 Chapter 01 - An Introduction to Business Statistics 53. Consider the 3X2 contingency table below. Compute the expected frequencies in row 2. A. 16, 24 B. 15, 25 C. 20, 20 D. 20, 30 AACSB: Analytic Bloom's: Application Difficulty: Medium Learning Objective: 1 Topic: Chi-Square 1-1099 Cha...
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This document was uploaded on 01/20/2014.

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