1-20chapter stats

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Unformatted text preview: Topic: Sampling distribution of sample mean 1-587 Chapter 01 - An Introduction to Business Statistics 68. A PGA (Professional Golf Association) tournament organizer is attempting to determine whether hole (pin) placement has a significant impact on the average number of strokes for the 13th hole on a given golf course. Historically, the pin has been placed in the front right corner of the green, and the historical mean number of strokes for the hole has been 4.25, with a standard deviation of 1.6 strokes. On a particular day during the most recent golf tournament, the organizer placed the hole (pin) in the back left corner of the green. 64 golfers played the hole with the new placement on that day. Determine the probability of the sample average number of strokes exceeding 4.75. A. .9938 B. .4013 C. .0062 D. .3783 AACSB: Analytic Bloom's: Application Difficulty: Hard Topic: Sampling distribution of sample mean 69. Packages of sugar bags for Sweeter Sugar Inc. have an average weight of 16 ounces and a standard deviation of 0.2 ounces. The weights of the sugar bags are normally distributed. What is the probability that 16 randomly selected packages will have a weight in excess of 16.075 ounces? A. .0500 B. .3520 C. .9332 D. .0668 AACSB: Analytic Bloom's: Application Difficulty: Medium Topic: Sampling distribution of sample mean 1-588 Chapter 01 - An Introduction to Business Statistics 70. The population of lengths of aluminum - coated steel sheets is normally distributed with a mean of 30.05 inches and a standard deviation of 0.3 inches. What is the probability that average length of a steel sheet from a sample of 9 units is more than 29.95 inches long? A. .8413 B. .6293 C. .3707 D. .1587 AACSB: Analytic Bloom's: Application Difficulty: Medium Topic: Sampling distribution of sample mean 71. Find A. .1587 B. .8413 C. .6293 D. .3707 AACSB: Analytic Bloom's: Application Difficulty: Medium Topic: Sampling distribution of sample mean 1-589 Chapter 01 - An Introduction to Business Statistics 72. Find A. 1.000 B. 2.25 C. .9878 D. .0122 AACSB: Analytic Bloom's: Application Difficulty: Medium Topic: Sampling distribution of sample mean 73. Find A. .0764 B. .9998 C. .9236 D. .0001 AACSB: Analytic Bloom's: Application Difficulty: Medium Topic: Sampling distribution of sample mean 1-590 Chapter 01 - An Introduction to Business Statistics 74. Find A. 0.20 B. 200 C. 20 D. 2.00 AACSB: Analytic Bloom's: Application Difficulty: Hard Topic: Sampling distribution of sample mean 75. Find A. .8413 B. .4602 C. .5398 D. .1587 AACSB: Analytic Bloom's: Application Difficulty: Medium Topic: Sampling distribution of sample mean 1-591 Chapter 01 - An Introduction to Business Statistics 76. Find A. .9786 B. .9999 C. .0214 D. .9893 AACSB: Analytic Bloom's: Application Difficulty: Medium Topic: Sampling distribution of sample mean 77. The number of defectives in the samples of 50 observations each is the following: 5, 1, 1, 2, 3, 3, 1, 4, 2, 3. What is the estimate of the population proportion of defectives? A. .25 B. .50 C. .05 D. .42 AACSB: Analytic Bloom's: Application Difficulty: Medium Topic: Sampling distribution of sample proportion 1-592 Chapter 01 - An Introduction to Business Statistics 78. The number of defectives in the samples of 100 observations each is the following: 1, 2, 1, 0, 2, 3, 1, 4, 2, 1. What is the estimate of the population proportion of defectives? A. .017 B. .17 C. .016 D. .16 AACSB: Analytic Bloom's: Application Difficulty: Medium Topic: Sampling distribution of sample proportion 79. Suppose that 60 percent of the voters in a particular region support a candidate. Find the probability that a sample of 1,000 voters would yield a sample proportion in favor of the candidate within 4 percentage points of the actual proportion. A. .0155 B. .9952 C. .9484 D. .9902 AACSB: Analytic Bloom's: Application Difficulty: Hard Topic: Sampling distribution of sample proportion 1-593 Chapter 01 - An Introduction to Business Statistics 80. Suppose that 60 percent of the voters in a particular region support a candidate. Find the probability that a sample of 1,000 voters would yield a sample proportion in favor of the candidate within 2 percentage points. A. .9015 B. .8030 C. .0155 D. .7939 AACSB: Analytic Bloom's: Application Difficulty: Hard Topic: Sampling distribution of sample proportion 81. An unbiased estimate of A. s B. is _____. C. D. σ AACSB: Analytic Bloom's: Knowledge Difficulty: Medium Topic: Sampling distribution of sample mean 1-594 Chapter 01 - An Introduction to Business Statistics 82. A random sample of size 36 is taken from a population with mean 50 and standard deviation 5. The sampling distribution of A. Cannot be determined B. Is skewed to the left C. Normal D. Is skewed to the right ____________________. AACSB: Analytic Bloom's: Knowledge Difficulty: Medium Topic: Sampling distribution of sample mean 83. A random sample of size 36 is taken from a population with mean 50 and standard deviation 5. What is A. 50 B. 5 C. 8.33 D. 0.833 ? AACSB: Analytic Bloom's: A...
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