A recent survey found that in a sample of 150 families, 46 owned dogs. A survey done 15 years ago found in a sample of 120 families, 32 owned dogs. Is there evidence, using a = .05, that the proportion of families that own dogs has changed over this time period? a.) Should the null hypothesis be rejected? Yes or No; Explain how you made this decision. b.) Write a sentence summarizing, in the context of this question, your result. What does your conclusion imply the proportion, over this 15 year period, of families that own dogs?
A recent survey found that in a sample of 150 families, 46 owned dogs. A survey done 15 years ago found in a sample of 120 families, 32 owned dogs. Is there evidence, using a = .05, that the proportion of families that own dogs has changed over this time period? a.) Should the null hypothesis be rejected? Yes or No; Explain how you made this decision. b.) Write a sentence summarizing, in the context of this question, your result. What does your conclusion imply the proportion, over this 15 year period, of families that own dogs?
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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A recent survey found that in a sample of 150 families, 46 owned dogs.
A survey done 15 years ago found in a sample of 120 families, 32 owned dogs. Is there evidence, using a = .05, that the proportion of families that own dogs has changed over this time period?
a.) Should the null hypothesis be rejected? Yes or No; Explain how you made this decision.
b.) Write a sentence summarizing, in the context of this question, your result. What does your conclusion imply the proportion, over this 15 year period, of families that own dogs?
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