It is known that one in ten consumers favor a certain brand of potato chips. After a promotional campaign in a particular sales region, a random sample of 200 people were interviewed to study the effect of this campaign. (a) Derive the test to compare the null hypothesis that the campaign had no effect on people's opinion of this brand of potato chips against the alternative hypothesis that there was an increase in the favorability of this brand of chips. (b) Using the test you obtained in part (a), what conclusions do you draw if 26 of those interviewed favored that particular brand of chips.
It is known that one in ten consumers favor a certain brand of potato chips. After a promotional campaign in a particular sales region, a random sample of 200 people were interviewed to study the effect of this campaign. (a) Derive the test to compare the null hypothesis that the campaign had no effect on people's opinion of this brand of potato chips against the alternative hypothesis that there was an increase in the favorability of this brand of chips. (b) Using the test you obtained in part (a), what conclusions do you draw if 26 of those interviewed favored that particular brand of chips.
Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter11: Data Analysis And Probability
Section: Chapter Questions
Problem 8CR
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Transcribed Image Text:It is known that one in ten consumers favor a certain brand of potato chips. After
a promotional campaign in a particular sales region, a random sample of 200 people
were interviewed to study the effect of this campaign.
(a) Derive the test to compare the null hypothesis that the campaign had no effect on
people's opinion of this brand of potato chips against the alternative hypothesis
that there was an increase in the favorability of this brand of chips.
(b) Using the test you obtained in part (a), what conclusions do you draw if 26 of
those interviewed favored that particular brand of chips.
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