A Lousiana State University student wishes to determine the student's feelings about the quality of service in the cafeteria. Which of the following sample designs is best to avoid bias? Give your reasons of why you chose your answer. a) Place an ad in the student newspaper asking all readers to mail in their opinions. b) Obtain a list of student names from the registar and select 250 names at random to contact. c) Air an announcement on the campus radio station asking all listeners to phone in their opinion. d) Survey every tenth student who enters the cafeteria.
A Lousiana State University student wishes to determine the student's feelings about the quality of service in the cafeteria. Which of the following sample designs is best to avoid bias? Give your reasons of why you chose your answer. a) Place an ad in the student newspaper asking all readers to mail in their opinions. b) Obtain a list of student names from the registar and select 250 names at random to contact. c) Air an announcement on the campus radio station asking all listeners to phone in their opinion. d) Survey every tenth student who enters the cafeteria.
Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter11: Data Analysis And Probability
Section11.4: Collecting Data
Problem 6E
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Question
A Lousiana State University student wishes to determine the student's feelings about the quality of service in the cafeteria. Which of the following sample designs is best to avoid bias? Give your reasons of why you chose your answer.
a) Place an ad in the student newspaper asking all readers to mail in their opinions.
b) Obtain a list of student names from the registar and select 250 names at random to contact.
c) Air an announcement on the campus radio station asking all listeners to phone in their opinion.
d) Survey every tenth student who enters the cafeteria.
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