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 1797 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 1798 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 1799 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 1800 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 pvalue.
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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 Winter '14

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