# The chancellor of a major university was concerned

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Chapter 10 / Exercise 21
Introduction to Probability and Statistics
Beaver/Mendenhall
Expert Verified
20) The chancellor of a major university was concerned about alcohol abuse on her campus and wanted to find out the proportion of students at her university who visited campus bars on the weekend before the final exam week. Her assistant took a random sample of 250 students and computed the portion of students in the sample who visited campus bars on the weekend before the final exam. The portion of all students at her university who visited campus bars on the weekend before the final exam week is an example of A) a statistic. B) a population. C) a sample. D) a parameter.
21) The chancellor of a major university was concerned about alcohol abuse on her campus and wanted to find out the proportion of students at her university who visited campus bars on the weekend before the final exam week. Her assistant took a random sample of 250 students. The portion of students in the sample who visited campus bars on the weekend before the final exam week is an example of ________.
TABLE 1-1 The manager of the customer service division of a major consumer electronics company is interested in determining whether the customers who have purchased a DVD player made by the company over the past 12 months are satisfied with their products. 22) Referring to Table 1-1, the population of interest is
23) True or False: A population is the totality of items or things under consideration.
25) True or False: Problems may arise when statistically unsophisticated users who do not understand the assumptions behind the statistical procedures or their limitations are misled by results obtained from computer software. 26) True or False: Managers need an understanding of statistics to be able to present and describe information accurately, draw conclusions about large populations based on small samples, improve processes, and make reliable forecasts.
27) True or False: A statistic is usually used to provide an estimate for a usually unobserved parameter.
29) True or False: A professor computed the sample average exam score of 20 students and used it to estimate the average exam score of the 1,500 students taking the exam was an example of inferential statistics.
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Chapter 10 / Exercise 21
Introduction to Probability and Statistics
Beaver/Mendenhall
Expert Verified
Chapter 1 Instruction and Data Collection