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General Motors wants to know if a newly designed car has a different appeal to people under 30 versus people over 50 (so they better know who to market the car towards). If there is at least a 10% difference in either proportion then GM will significantly design its marketing campaign towards that group (otherwise, they will target more general audience). In another sample of 500 over 50, 375 expressed a favorable opinion of the car. In another sample of 450 under 30-year-olds

General Motors wants to know if a newly designed car has a different appeal to people under 30 versus people over 50 (so they better know who to market the car towards). If there is at least a 10% difference in either proportion then GM will significantly design its marketing campaign towards that group (otherwise, they will target more general audience). In another sample of 500 over 50, 375 expressed a favorable opinion of the car. In another sample of 450 under 30-year-olds

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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General Motors wants to know if a newly designed car has a different appeal to people under 30 versus people over 50 (so they better know who to market the car towards). If there is at least a 10% difference in either proportion then GM will significantly design its marketing campaign towards that group (otherwise, they will target more general audience). In another sample of 500 over 50, 375 expressed a favorable opinion of the car. In another sample of 450 under 30-year-olds, 270 expressed a more favorable opinion of a new design (compared with the old design). a) at the 5% level of significance does it appear there is at least a 10% difference? b) where is the P value?
11) General Motors wants to know if a newly designed car has a different appeal to people under 30 versus people over 50 (so they better know who to market the car towards). If there is at least a 10% difference in either proportion then GM will specifically design its marketing campaign towards that group (otherwise, they will target a more general audience). In another sample of 500 over-50, 375 expressed a favorable opinion of the car. In another sample of 450 under-30 year olds, 270 expressed a more favorable opinion of the new design (compared with the old design). a) At the 5% level of significance does it appear there is at least a 10% difference? b) What is the p-value?
Transcribed Image Text:11) General Motors wants to know if a newly designed car has a different appeal to people under 30 versus people over 50 (so they better know who to market the car towards). If there is at least a 10% difference in either proportion then GM will specifically design its marketing campaign towards that group (otherwise, they will target a more general audience). In another sample of 500 over-50, 375 expressed a favorable opinion of the car. In another sample of 450 under-30 year olds, 270 expressed a more favorable opinion of the new design (compared with the old design). a) At the 5% level of significance does it appear there is at least a 10% difference? b) What is the p-value?
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