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Problem 2. Last year, in a sample of 1200 randomly selected consumers who had opportunities to send in a rebate claim form after purchasing a product A, there are 300 of these people said they never did. This year, if a consumer sends in a rebate claim form, he will get 5 reward points. Observe 1000 randomly selected consumers who had opportunities to send in a rebate claim form after purchasing a product A this year, 200 of these people said they never did. a/ Does this data strongly suggest that the true proportion of such consumers who never apply for a rebate claim after purchasing the product A last year is greater than this year? Test the hypotheses at significance level 0.05 b/ Calculate an lower confidence bound at the 97% confidence level for the true proportion of such consumers who never apply for a rebate claim after purchasing the product A this year

Problem 2. Last year, in a sample of 1200 randomly selected consumers who had opportunities to send in a rebate claim form after purchasing a product A, there are 300 of these people said they never did. This year, if a consumer sends in a rebate claim form, he will get 5 reward points. Observe 1000 randomly selected consumers who had opportunities to send in a rebate claim form after purchasing a product A this year, 200 of these people said they never did. a/ Does this data strongly suggest that the true proportion of such consumers who never apply for a rebate claim after purchasing the product A last year is greater than this year? Test the hypotheses at significance level 0.05 b/ Calculate an lower confidence bound at the 97% confidence level for the true proportion of such consumers who never apply for a rebate claim after purchasing the product A this year

Holt Mcdougal Larson Pre-algebra: Student Edition 2012
Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter11: Data Analysis And Probability
Section11.5: Interpreting Data
Problem 1C
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Problem 2. Last year, in a sample of 1200 randomly selected consumers who had opportunities to send in a rebate claim form after purchasing a product A, there are 300 of these people said they never did. This year, if a consumer sends in a rebate claim form, he will get 5 reward points. Observe 1000 randomly selected consumers who had opportunities to send in a rebate claim form after purchasing a product A this year, 200 of these people said they never did. a/ Does this data strongly suggest that the true proportion of such consumers who never apply for a rebate claim after purchasing the product A last year is greater than this year? Test the hypotheses at significance level 0.05 b/ Calculate an lower confidence bound at the 97% confidence level for the true proportion of such consumers who never apply for a rebate claim after purchasing the product A this year
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