A company produces men’s jeans that can be styled with either a regular cut or a boot cut. In an effort to estimate the proportion of male customers that prefer the boot-cut style, an analyst takes a random sample of 220 sales of jeans and finds 37 were for boot-cut jeans. A. Estimate with 90% confidence the true proportion of all male customers that prefer boot- cut style jeans. B. How many male customers would need to be sampled to estimate the desired proportion to within 3% using 90% confidence? C. Verify that the sample size used in part A is large enough for the procedure to be considered valid.

A company produces men’s jeans that can be styled with either a regular cut or a boot cut. In an effort to estimate the proportion of male customers that prefer the boot-cut style, an analyst takes a random sample of 220 sales of jeans and finds 37 were for boot-cut jeans. A. Estimate with 90% confidence the true proportion of all male customers that prefer boot- cut style jeans. B. How many male customers would need to be sampled to estimate the desired proportion to within 3% using 90% confidence? C. Verify that the sample size used in part A is large enough for the procedure to be considered valid.

Holt Mcdougal Larson Pre-algebra: Student Edition 2012

1st Edition

ISBN:9780547587776

Author:HOLT MCDOUGAL

Publisher:HOLT MCDOUGAL

Chapter11: Data Analysis And Probability

Section11.4: Collecting Data

Problem 6E

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