Suppose a drug company designs to develop a new drug to prevent colds. The company states that the drug is equally effective for men and women. To test this claim, they choose a simple random sample of 100 women and 200 men from a population of 100,000 volunteers. At the end of the study, 38 women caught a cold; and 102 men caught a cold. (a) Based on these findings, can we reject the company's claim that the drug is equally effective for men and women? Use a 0.05 level of significance. (b) Find the 95% confidence interval for the difference between the proportions of women and men caught a cold. (c) Are the results of (a) and (b) consistent? Explain briefly.

Suppose a drug company designs to develop a new drug to prevent colds. The company states that the drug is equally effective for men and women. To test this claim, they choose a simple random sample of 100 women and 200 men from a population of 100,000 volunteers. At the end of the study, 38 women caught a cold; and 102 men caught a cold. (a) Based on these findings, can we reject the company's claim that the drug is equally effective for men and women? Use a 0.05 level of significance. (b) Find the 95% confidence interval for the difference between the proportions of women and men caught a cold. (c) Are the results of (a) and (b) consistent? Explain briefly.

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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