Answered: American businesses provide?" The…

Holt Mcdougal Larson Pre-algebra: Student Edition 2012

1st Edition

ISBN:9780547587776

Author:HOLT MCDOUGAL

Publisher:HOLT MCDOUGAL

ChapterCSR: Contents Of Student Resources

Section: Chapter Questions

Problem 11.1EP

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American businesses provide?" The distribution of responses to this question was as follows: Excellent 8% Pretty good 47% Only fair 34% Poor 11% Suppose a store manager wants to find out whether the results of this consumer survey apply to customers of supermarkets in his city. To do so, he interviews 207 randomly selected customers as they leave the supermarkets in various parts of the city as to their rating of service. Following is the number of responses and distribution of this survey: Excellent 21 Pretty good 109 Only fair 62 Poor 15 Please answer the following: Determine whether the observed frequencies of responses from this survey are statistically the same as the frequencies that would be expected on the basis of the national survey. Hint: Think goodness-of-fit. Also, check out my attachment. Can you describe a chi-squared application, either goodness-of-fit or test-for-independence, in your profession? Note: Please remember to reply to at least one other student's post. DD

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