1-20chapter stats

05 to test the hypotheses a 1645 b 1645 c 196 d 128 e

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Unformatted text preview: m. and a standard deviation of 1.91 m. Calculate the p-value for this test statistic. A. 0.0032 B. 0.0001 C. 0.3264 D. 0.0064 E. -0.0032 AACSB: Analytic Bloom's: Application Difficulty: Medium Topic: Hypothesis testing 98. It is estimated that the average person in the US uses 123 gallons of water per day. Some environmentalists believe this figure is too high and conducted a survey of 40 randomly selected Americans. They find a mean of 113.03 gallons and a standard deviation of 25.99 gallons. Calculate the appropriate test statistic to test the hypotheses. A. -0.38 B. 2.43 C. 0.38 D. -15.34 E. -2.43 AACSB: Analytic Bloom's: Application Difficulty: Medium Topic: Hypothesis testing 1-793 Chapter 01 - An Introduction to Business Statistics 99. It is estimated that the average person in the US uses 123 gallons of water per day. Some environmentalists believe this figure is too high and conducted a survey of 40 randomly selected Americans. They find a mean of 113.03 gallons and a standard deviation of 25.99 gallons. Calculate the p-value for this test statistic. A. 0.4925 B. -0.0075 C. 0.0075 D. 0.015 E. 0.352 AACSB: Analytic Bloom's: Application Difficulty: Medium Topic: Hypothesis testing 100. A manufacturer of salad dressings uses machines to dispense liquid ingredients into bottles that move along a filling line. The machine that dispenses dressing is working properly when 8 ounces are dispensed. The standard deviation of the process is 0.15 ounces. A sample of 48 bottles is selected periodically, and the filling line is stopped if there is evidence that the mean amount dispensed is different from 8 ounces. Suppose that the mean amount dispensed in a particular sample of 48 bottles is 7.983 ounces. Calculate the test statistic. A. -0.785 B. -1.57 C. -3.04 D. 1.57 E. 0.785 AACSB: Analytic Bloom's: Application Difficulty: Medium Topic: Hypothesis testing 1-794 Chapter 01 - An Introduction to Business Statistics 101. A manufacturer of salad dressings uses machines to dispense liquid ingredients into bottles that move along a filling line. The machine that dispenses dressing is working properly when 8 ounces are dispensed. The standard deviation of the process is 0.15 ounces. A sample of 48 bottles is selected periodically, and the filling line is stopped if there is evidence that the mean amount dispensed is different from 8 ounces. Suppose that the mean amount dispensed in a particular sample of 48 bottles is 7.983 ounces. Calculate the p-value. A. .216 B. .432 C. .0012 D. .0582 E. .1164 AACSB: Analytic Bloom's: Application Difficulty: Medium Topic: Hypothesis testing 102. A manufacturer of salad dressings uses machines to dispense liquid ingredients into bottles that move along a filling line. The machine that dispenses dressing is working properly when 8 ounces are dispensed. The standard deviation of the process is 0.15 ounces. A sample of 48 bottles is selected periodically, and the filling line is stopped if there is evidence that the mean amount dispensed is different from 8 ounces. Suppose that the mean amount dispensed in a particular sample of 48 bottles is 7.983 ounces. Calculate a confidence interval to test the hypotheses at α = .05. A. [7.947 8.019] B. [7.941 8.025] C. [7.933 8.033] D. [7.955 8.011] E. [7.916 8.050] AACSB: Analytic Bloom's: Application Difficulty: Medium Topic: Hypothesis testing 1-795 Chapter 01 - An Introduction to Business Statistics 103. The manager of a grocery store wants to determine whether the amount of water contained in 1 gallon bottle purchased from a nationally known manufacturer actually average 1 gallon. It is known from the manufacturer's specifications that the standard deviation of the amount of water is equal to 0.02 gallon. A random sample of 32 bottles is selected, and the mean amount of water per 1 gallon can is found to be 0.995 gallon. Calculate the test statistic A. -2.83 B. -1.41 C. -2.00 D. 2.83 E. 1.41 AACSB: Analytic Bloom's: Application Difficulty: Medium Topic: Hypothesis testing 104. The manager of a grocery store wants to determine whether the amount of water contained in 1 gallon bottle purchased from a nationally known manufacturer actually average 1 gallon. It is known from the manufacturer's specifications that the standard deviation of the amount of water is equal to 0.02 gallon. A random sample of 32 bottles is selected, and the mean amount of water per 1 gallon can is found to be 0.995 gallon. Calculate the p-value. A. .0793 B. .1586 C. .0023 D. .0046 E. .0456 AACSB: Analytic Bloom's: Application Difficulty: Medium Topic: Hypothesis testing 1-796 Chapter 01 - An Introduction to Business Statistics 105. The manager of a grocery store wants to determine whether the amount of water contained in 1 gallon bottle purchased from a nationally known manufacturer actually average 1 gallon. It is known from the manufacturer's specifications that the standard deviation of the amount of water is equal to 0.02 gallon. A random sample of 32 bottles is selected, and the mean amount of water per 1 gallon can is found to be 0.995 gallon. Calculate a confidence interval to test...
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This document was uploaded on 01/20/2014.

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