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20 find p 175 a 9761 b 0239 c 0392 d 9999 aacsb

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Unformatted text preview: 7 AACSB: Analytic Bloom's: Application Difficulty: Medium Topic: Sampling distribution of sample mean 1-602 Chapter 01 - An Introduction to Business Statistics 100. The chief chemist for a major oil/gasoline production company claims that the regular unleaded gasoline produced by the company contains on average 4 ounces of a certain ingredient. The chemist further states that the distribution of this ingredient per gallon of regular unleaded gasoline is normal and has a standard deviation of 1.2 ounces. What is the probability of finding an average in excess of 4.3 ounces of this ingredient from randomly inspected 100 gallons of regular unleaded gasoline? A. .5987 B. .4013 C. .9938 D. .0062 AACSB: Analytic Bloom's: Application Difficulty: Medium Topic: Sampling distribution of sample mean 101. The chief chemist for a major oil/gasoline production company claims that the regular unleaded gasoline produced by the company contains on average 4 ounces of a certain ingredient. The chemist further states that the distribution of this ingredient per gallon of regular unleaded gasoline is normal and has a standard deviation of 1.2 ounces. What is the probability of finding an average less than 3.85 ounces of this ingredient from randomly inspected 64 gallons of regular unleaded gasoline? A. .1587 B. .8413 C. .1357 D. .8643 AACSB: Analytic Bloom's: Application Difficulty: Medium Topic: Sampling distribution of sample mean 1-603 Chapter 01 - An Introduction to Business Statistics 102. In the upcoming governor's election, the most recent poll based on 900 respondents predicts that the incumbent will be reelected with 55% of the votes. From the 900 respondents, how many indicated that they would not vote for the current governor or indicated that they were undecided? A. 495 B. 450 C. 405 D. 400 AACSB: Analytic Bloom's: Application Difficulty: Easy Topic: Sampling distribution of sample proportion 103. In the upcoming governor's election, the most recent poll based on 900 respondents predicts that the incumbent will be reelected with 55% of the votes. What is A. .00825 B. .0166 C. .0247 D. .0003 AACSB: Analytic Bloom's: Application Difficulty: Medium Topic: Sampling distribution of sample proportion 1-604 ? Chapter 01 - An Introduction to Business Statistics 104. In the upcoming governor's election, the most recent poll based on 900 respondents predicts that the incumbent will be reelected with 55% of the votes. For the sake of argument, assume that 51% of the actual voters in the state support the incumbent governor (p = 0.51). Calculate the probability of observing a sample proportion of voters 0.55 or higher supporting the incumbent governor. A. 0166 B. 0247 C. 0082 D. 9918 AACSB: Analytic Bloom's: Application Difficulty: Medium Topic: Sampling distribution of sample proportion 105. It has been reported that the average time to download the home page from a government website was 0.9 seconds. Suppose that the download times were normally distributed with a standard deviation of 0.3 seconds. If random samples of 23 download times are selected describe the shape of the sampling distribution and how it was determined. A. Normal, size of sample meets the Central Limit Theorem requirement B. Normal, the original population is normal C. Skewed, the original population is not a normal distribution D. Cannot be determined with the information that is given AACSB: Reflective Thinking Bloom's: Comprehension Difficulty: Easy Topic: Sampling distribution of sample mean 1-605 Chapter 01 - An Introduction to Business Statistics 106. It has been reported that the average time to download the home page from a government website was 0.9 seconds. Suppose that the download times were normally distributed with a standard deviation of 0.3 seconds. If random samples of 36 download times are selected calculate the mean of the sampling distribution of the sampling mean. A. 0.3 B. 0.15 C. 0.9 D. 0.05 AACSB: Analytic Bloom's: Application Difficulty: Easy Topic: Sampling distribution of sample mean 107. It has been reported that the average time to download the home page from a government website was 0.9 seconds. Suppose that the download times were normally distributed with a standard deviation of 0.3 seconds. If random samples of 36 download times are selected calculate the standard deviation of the sampling distribution of the sample mean. A. 0.3 B. 0.15 C. 0.9 D. 0.05 AACSB: Analytic Bloom's: Application Difficulty: Medium Topic: Sampling distribution of sample mean 1-606 Chapter 01 - An Introduction to Business Statistics 108. It has been reported that the average time to download the home page from a government website was 0.9 seconds. Suppose that the download times were normally distributed with a standard deviation of 0.3 seconds. If random samples of 36 download times are selected 80% of the sample means will be between what two values symmetrically distributed around the population mean. A. [.648 1.152] B. [.836 .964] C. [.514 1.280] D. [.858 .942] AACSB: Analytic Bloom's: Applicati...
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This document was uploaded on 01/20/2014.

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