A sample is a part of the population from which we actually...

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Essentials of Business Analytics
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Chapter 6 / Exercise 19
Essentials of Business Analytics
Camm/Cochran
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8A Submitted by [email protected] on 7/27/2012 11:53:35 AM Points Awarded 10 Points Missed 0 Percentage 100% 1. An opinion poll contacts 1161 adults and asks them, "Which political party do you think has better ideas for leading the country in the twenty-first century?" In all, 696 of the 1161 say, "The Democrats." The sample in this setting is A. all 225 million adults in the United States. B. the 1161 people interviewed. C. the 696 people who chose the Democrats.
A sample is a part of the population from which we actually collect information.We use a sample to draw conclusions about the entire population. Points Earned: 1/1
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Essentials of Business Analytics
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Chapter 6 / Exercise 19
Essentials of Business Analytics
Camm/Cochran
Expert Verified
Your Response: B 2. A committee on community relations in a college town plans to survey local businesses about the importance of students as customers. From telephone book listings, the committee chooses 150 businesses at random. Of these, 73 return the questionnaire mailed by the committee. The population for this study is
The population in a statistical study is the entire group of individuals about which we want information. A sample is a part of the population Points Earned: 1/1
3. The Web portal AOL places opinion poll questions next to many of its news stories. Simply click your response to join the sample. One of the questions in January 2008 was "Do you plan to diet this year?" More than 30,000 people responded, with 68% saying "Yes". You can conclude that
A. about 68% of Americans planned to diet in 2008. B. the poll uses voluntary response, so the results tell us little about the population adults. C. the sample is too small to draw any conclusion. A voluntary response sample is typically biased, so we can draw few conclusions about the population. Correct Answer: B Your Response: B Points Earned: 1/1
4. You must choose an SRS of 10 of the 440 retail outlets in New York that sell your company's products. How would you label this population in order to use Table B? Points Earned: 1/1
Your Response: A 5. You are using the table of random digits to choose a simple random sample of 6 students from a class of 30 students. You label the students 01 to 30 in alphabetical order. Go to line 102 of Table B. Your sample contains the students labeled

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