{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

1-20chapter stats

275 2 25 n1 1000 n2 1000 chapter 01 an introduction

Info icon This preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: tatistics 89. 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 CON= .20, nCON = 300, nBKG = 400, calculate the estimated standard deviation for the model. A. 0.0008 B. 0.0289 C. 0.0200 D. 0.0106 BKG = .14, 1.384 > 1.28, reject H0 AACSB: Analytic Bloom's: Application Difficulty: Hard Learning Objective: 5 Topic: Two independent population proportions 90. What is the F-statistic for testing H0: σ12 ≤ σ22, HA: σ22> σ12 at n2= 19, s12 = .03, s22 = .02? A. 1.50 B. 0.67 C. 1.22 D. 2.25 AACSB: Analytic Bloom's: Application Difficulty: Easy Learning Objective: 7 Topic: Two population variances 1-895 = .05 where n1 = 16, Chapter 01 - An Introduction to Business Statistics 91. Testing H0: σ12 ≤ σ22, HA: σ12> σ22 at α = .05 where n1 = 16, n2= 19, s12 = .03, s22 = .02, we fail to reject the null hypothesis. A. True B. False AACSB: Analytic Bloom's: Application Difficulty: Medium Learning Objective: 7 Topic: Two population variances 92. Using the following data a test of the equality of variances for two populations at α = .10, where sample 1 is randomly selected from population 1 and sample 2 is randomly selected from population 2 finds that we reject H0 at α = .10. A. True B. False AACSB: Analytic Bloom's: Application Difficulty: Medium Learning Objective: 7 Topic: Two population variances 1-896 Chapter 01 - An Introduction to Business Statistics 93. Use the following data and a test of the equality of variances for two populations at α = . 10, where sample 1 is randomly selected from population 1 and sample 2 is randomly selected from population 2. Identify the critical value used for testing the equality of the variances. A. 1.138 B. 1.645 C. 5.05 D. 6.39 AACSB: Analytic Bloom's: Application Learning Objective: 7 Topic: Two population variances 1-897 Chapter 01 - An Introduction to Business Statistics 94. Testing the equality of means at = .05, where sample 1 has data: 16, 14, 19, 18, 19, 20, 15, 18, 17, 18, and sample 2 has data: 13, 19, 14, 17, 21, 14, 15, 10, 13, 15 (Assume equal population variances), we determine that we can reject the null hypothesis. A. True B. False AACSB: Analytic Bloom's: Application Difficulty: Hard Learning Objective: 2 Topic: Two independent population means 95. Calculate the pooled variance where sample 1 has data: 16, 14, 19, 18, 19, 20, 15, 18, 17, 18, and sample 2 has data: 13, 19, 14, 17, 21, 14, 15, 10, 13, 15. A. 2.539 B. 6.566 C. 6.856 D. 6.170 AACSB: Analytic Bloom's: Application Difficulty: Hard Learning Objective: 2 Topic: Two independent population means 1-898 Chapter 01 - An Introduction to Business Statistics 96. Determine the 95% confidence interval for the difference between two population means where sample 1 has data: 16, 14, 19, 18, 19, 20, 15, 18, 17, 18, and sample 2 has data: 13, 19, 14, 17, 21, 14, 15, 10, 13, 15. (Assume equal population variances) A. (-0.16 4.76) B. (-0.58 5.18) C. (0.01 4.59) D. (0.56 4.04) AACSB: Analytic Bloom's: Application Difficulty: Hard Learning Objective: 2 Topic: Two independent population means 97. Calculate the t statistic for testing equality of means where 5.4, s22 = 5.2, n1= 6, n2 = 7. (Assume equal population variances) A. -2.42 B. -1.05 C. -2.63 D. -4.86 AACSB: Analytic Bloom's: Application Difficulty: Medium Learning Objective: 2 Topic: Two independent population means 1-899 1 = 8.2, 2 = 11.3, s12 = Chapter 01 - An Introduction to Business Statistics 98. Find a 99 percent confidence interval for the difference between means n1 = 49, n2 = 49, 2 2 = 87, 2 = 92, σ1 = 13 and σ2 = 15. A. (-12.30 2.30) B. (-6.47 -3.53) C. (-6.94 -3.05) D. (-5.57 -4.43) 1 AACSB: Analytic Bloom's: Application Difficulty: Medium Learning Objective: 1 Topic: Two independent population means 99. Let p1 represent the population proportion of U.S. Senate and Congress (House of Representatives) democrats who are in favor of a new modest tax on "junk food". Let p2 represent the population proportion of U.S. Senate and Congress (House of Representative) republicans who are in favor of a new modest tax on "junk food". Out of the 265 democratic senators and congressman 106 of them are in favor of a "junk food" tax. Out of the 285 republican senators and congressman only 57 of them are in favor of a "junk food" tax. Find a 95 percent confidence interval for the difference between proportions l and 2. A. (0.197 0.203) B. (0.163 0.238) C. (0.108 0.292) D. (0.125 0.275) AACSB: Analytic Bloom's: Application Difficulty: Medium Learning Objective: 5 Topic: Two independent population proportions 1-900 Chapter 01 - An Introduction to Business Statistics 100. Let p1 represent the population proportion of U.S. Senate and Congress (House of Representatives) democrats who are in favor of a new modest tax on "junk food". Let p2 represent the population proportion of U.S. Senate and Congress (House of Representative) rep...
View Full Document

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern