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When testing h0 1 2 2 ha 1 2 2 where 24 n1 40

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Unformatted text preview: : Analytic Bloom's: Application Difficulty: Medium Learning Objective: 7 Topic: Two population variances 76. When testing H0: σ12= σ12, HA: σ12> σ22 at α = .01 where n1 = 5, n2= 6, s12 = 15750, s22 = 10920 what critical value do we use? A. 2.821 B. 11.39 C. 8.75 D. 1.443 AACSB: Analytic Bloom's: Application Difficulty: Medium Learning Objective: 7 Topic: Two population variances 1-888 Chapter 01 - An Introduction to Business Statistics 77. Find a 95 percent confidence interval for µ1- µ2, where n1= 50, n2 = 75, 76, σ12 = 8 and σ22 = 6. A. (5.04 6.96) B. (5.53 6.47) C. (5.19 6.81) D. (5.41 6.59) 1 = 82, 1 = 1.94, 2 = AACSB: Analytic Bloom's: Application Difficulty: Medium Learning Objective: 1 Topic: Two independent population means 78. Find a 95 percent confidence interval for µ1- µ2, where n1= 15, n2 = 10, = 1.04, s12 = .2025 and s22 = .0676. (Assume equal population variances) A. (0.587 1.213) B. (0.848 0.952) C. (0.629 1.171) D. (0.573 1.227) AACSB: Analytic Bloom's: Application Difficulty: Hard Learning Objective: 2 Topic: Two independent population means 1-889 2 Chapter 01 - An Introduction to Business Statistics 79. Find a 98 percent confidence interval for the paired difference. . A. (-1.118 4.318) B. (-1.277 4.477) C. (1.075 2.125) D. (1.104 2.096) AACSB: Analytic Bloom's: Application Difficulty: Medium Learning Objective: 4 Topic: Paired differences 80. Find a 90 percent confidence interval for the difference between the proportions of failures in factory 1 and factory 2 where A. (-0.0037 0.0237) B. (-0.0076 0.0276) C. (0.0004 0.0196) D. (0.0098 0.0102) 1 = .05, AACSB: Analytic Bloom's: Application Difficulty: Medium Learning Objective: 5 Topic: Two independent population proportions 1-890 2 = .04, n1= 500, n2 = 2000. Chapter 01 - An Introduction to Business Statistics 81. With a 90 percent confidence interval for the difference between the proportions of failures in factory 1 and factory 2 where 1 = .05, 0276) can we reject the null hypothesis at α = .10? A. Yes, reject the null hypothesis B. No; we can't reject the null hypothesis 2 = .04, n1= 500, n2 = 2000 of (-.0076 . AACSB: Analytic Bloom's: Application Difficulty: Medium Learning Objective: 5 Topic: Two independent population proportions 82. Find a 95 percent confidence interval for the difference between the proportions of older and younger drivers who have tickets where A. (-.007 .057) B. (.024 .026) C. (-.002 .052) D. (-.014 .064) 1 AACSB: Analytic Bloom's: Application Difficulty: Medium Learning Objective: 5 Topic: Two independent population proportions 1-891 = .275, 2 = .25, n1= 1000, n2 = 1000. Chapter 01 - An Introduction to Business Statistics 83. Find a 95 percent confidence interval for the difference between means where n1 = 50, n2= 36, 1 = 80, A. (4.16 5.84) B. (3.30 6.70) C. (4.40 5.60) D. (4.64 5.36) 2 = 75, σ12 = 5 and σ22 = 3. AACSB: Analytic Bloom's: Application Difficulty: Medium Learning Objective: 1 Topic: Two independent population means 84. Find a 95 percent confidence interval for µ1- µ2, where n1= 9, n2 = 6, 59, s12 = 6 and s22 = 3. (Assume equal population variances) A. (2.357 7.643) B. (2.494 7.506) C. (2.528 7.472) D. (3.840 6.160) AACSB: Analytic Bloom's: Application Difficulty: Medium Learning Objective: 2 Topic: Two independent population means 1-892 1 = 64, 2 = Chapter 01 - An Introduction to Business Statistics 85. Find a 90 percent confidence interval for the difference between the proportions of Group l and Group 2. Let p1 represent the population proportion of the people in group 1 who are in favor of new packaging and Let p2 represent the population proportion of the people in group 2 who are in favor of new packaging, where 1 = .21, 2 = .13, n1= 300, n2 = 400. A. (.0472 .1128) B. (.0510 .1090) C. (.0232 .1368) D. (.0324 .1276) AACSB: Analytic Bloom's: Application Difficulty: Medium Learning Objective: 5 Topic: Two independent population proportions 86. When we test H0: µ1- µ2 ≤ 0, HA: µ1- µ2> 0, 1 = 15.4, = 35, n2 = 18 at α = .01, we can reject the null hypothesis. A. True B. False AACSB: Analytic Bloom's: Application Difficulty: Hard Learning Objective: 1 Topic: Two independent population means 1-893 2 = 14.5, σ1 = 2, σ2 = 2.28, n1 Chapter 01 - An Introduction to Business Statistics 87. When we test H0: µ1- µ2 ≤ 0, HA: µ1- µ2> 0, = 35, n2 = 18 at α = .01, the test statistic used is: A. 1.42 B. 2.10 C. 2.33 D. 21.6 1 = 15.4, 2 = 14.5, σ1 = 2, σ2 = 2.28, n1 AACSB: Analytic Bloom's: Application Difficulty: Hard Learning Objective: 1 Topic: Two independent population means 88. At = .10, testing the hypothesis that the proportion of Consumer (CON) industry companies winter quarter profit growth is more than 2% greater than the proportion of Banking (BKG) companies winter quarter profit growth, given that 14, nCON = 300, nBKG = 400, we fail to reject the null hypothesis. A. True B. False 1.384 > 1.28, reject H0 AACSB: Analytic Bloom's: Application Difficulty: Hard Learning Objective: 5 Topic: Two independent population proportions 1-894 CON = .20, BKG =. Chapter 01 - An Introduction to Business S...
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This document was uploaded on 01/20/2014.

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