Hint(s) Check My Work According to the University of Nevada Center for Logistics Management, 11% of all merchandise sold in the United States gets returned. A Houston department store sampled 120 items sold in January and found that 15 of the items were returned. a. Construct a point estimate of the proportion of items returned for the population of sales transactions at the Houston store. (to 4 decimals) b. Construct a 90% confidence interval for the proportion of returns at the Houston store. ) (to 4 decimals) c. Is the proportion of returns at the Houston store significantly different from the returns for the nation as a whole? Provide statistical support for your answer. Since the confidence interval includes 0.11, we conclude that the return rate for the Houston store does not differ from the U.S. national return rate.

Hint(s) Check My Work According to the University of Nevada Center for Logistics Management, 11% of all merchandise sold in the United States gets returned. A Houston department store sampled 120 items sold in January and found that 15 of the items were returned. a. Construct a point estimate of the proportion of items returned for the population of sales transactions at the Houston store. (to 4 decimals) b. Construct a 90% confidence interval for the proportion of returns at the Houston store. ) (to 4 decimals) c. Is the proportion of returns at the Houston store significantly different from the returns for the nation as a whole? Provide statistical support for your answer. Since the confidence interval includes 0.11, we conclude that the return rate for the Houston store does not differ from the U.S. national return rate.

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter10: Statistics

Section10.4: Distributions Of Data

Problem 19PFA

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