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Suppose that the mean amount dispensed in a

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Unformatted text preview: the hypotheses at α = .001. A. [0.987 1.003] B. [0.986 1.004] C. [0.984 1.006] D. [0.983 1.007] E. [0.988 1.002] AACSB: Analytic Bloom's: Application Difficulty: Medium Topic: Hypothesis testing 106. It has been hypothesized that on average employees spend one hour a day playing video games at work. To test this at her company, a manager takes a random sample of 35 employees who showed a mean time of 55 minutes per day with a standard deviation of 5 minutes. Calculate the test statistic. A. 5.92 B. 63.89 C. 11.84 D. -5.92 E. -63.89 AACSB: Analytic Bloom's: Application Difficulty: Medium Topic: Hypothesis testing 1-797 Chapter 01 - An Introduction to Business Statistics 107. It has been hypothesized that on average employees spend one hour a day playing video games at work. To test this at her company, a manager takes a random sample of 35 employees who showed a mean time of 55 minutes per day with a standard deviation of 5 minutes. What is the critical value for testing these hypotheses at α = .01. A. 1.28 B. 1.645 C. 1.96 D. 2.33 E. 2.575 AACSB: Analytic Bloom's: Application Difficulty: Medium Topic: Hypothesis testing 108. It has been hypothesized that on average employees spend one hour a day playing video games at work. To test this at her company, a manager takes a random sample of 35 employees who showed a mean time of 55 minutes per day with a standard deviation of 5 minutes. Calculate a confidence interval to test the hypotheses at α = .02. A. [52.39 57.61] B. [53.03 56.97] C. [52.82 57.18] D. [53.34 56.66] E. [52.46 57.54] AACSB: Analytic Bloom's: Application Difficulty: Medium Topic: Hypothesis testing 1-798 Chapter 01 - An Introduction to Business Statistics 109. A cereal manufacturer is concerned that the boxes of cereal not be under filled or overfilled. Each box of cereal is supposed to contain 13 ounces of cereal. A random sample of 31 boxes is tested. The average weight is 12.58 ounces and the standard deviation is 0.25 ounces. Calculate the test statistic to test these hypotheses. A. 9.35 B. -9.35 C. 4.68 D. -4.68 E. -1.68 AACSB: Analytic Bloom's: Application Difficulty: Medium Topic: Hypothesis testing 110. A cereal manufacturer is concerned that the boxes of cereal not be under filled or overfilled. Each box of cereal is supposed to contain 13 ounces of cereal. A random sample of 31 boxes is tested. The average weight is 12.58 ounces and the standard deviation is 0.25 ounces. What is the critical value for testing these hypotheses at α = .001. A. 1.28 B. 1.645 C. 2.575 D. 3.09 E. 3.291 AACSB: Analytic Bloom's: Application Difficulty: Medium Topic: Hypothesis testing 1-799 Chapter 01 - An Introduction to Business Statistics 111. A cereal manufacturer is concerned that the boxes of cereal not be under filled or overfilled. Each box of cereal is supposed to contain 13 ounces of cereal. A random sample of 31 boxes is tested. The average weight is 12.58 ounces and the standard deviation is 0.25 ounces. Calculate a confidence interval to test the hypotheses at α = .10 A. [12.46 12.70] B. [12.48 12.68] C. [12.49 12.67] D. [12.51 12.65] E. [12.52 12.64] AACSB: Analytic Bloom's: Application Difficulty: Medium Topic: Hypothesis testing 112. The local pharmacy prides itself on the accuracy of the number of tablets that are dispensed in a 60 count prescription. The new manager feels that the pharmacy assistants might have become careless in counting due to an increase in the volume of prescriptions. To test her theory she randomly selects 40 prescriptions requiring 60 tablets and recounts the number in each bottle. She finds a sample mean of 62.05 and a standard deviation of 4.45. Calculate the test statistic. A. 2.91 B. -2.91 C. -3.57 D. 6.15 E. 3.57 AACSB: Analytic Bloom's: Application Difficulty: Medium Topic: Hypothesis testing 1-800 Chapter 01 - An Introduction to Business Statistics 113. The local pharmacy prides itself on the accuracy of the number of tablets that are dispensed in a 60 count prescription. The new manager feels that the pharmacy assistants might have become careless in counting due to an increase in the volume of prescriptions. To test her theory she randomly selects 40 prescriptions requiring 60 tablets and recounts the number in each bottle. She finds a sample mean of 62.05 and a standard deviation of 4.45. Calculate the p-value. A. 0.0000 B. 0.0018 C. 0.0036 D. 0.0009 E. 0.3859 AACSB: Analytic Bloom's: Application Difficulty: Easy Topic: Hypothesis testing 114. The local pharmacy prides itself on the accuracy of the number of tablets that are dispensed in a 60 count prescription. The new manager feels that the pharmacy assistants might have become careless in counting due to an increase in the volume of prescriptions. To test her theory she randomly selects 40 prescriptions requiring 60 tablets and recounts the number in each bottle. She finds a sample mean of 62.05 and a standard deviation of 4.45. Calculate a confidence interval to test the hypotheses at α = .002. A. [59.73 64.37] B. [59.88 64.22...
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This document was uploaded on 01/20/2014.

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