Direct Mailing Company sells computers and computer parts by mail. The company claims that less than 90% of all orders are mailed within 72 hours after they are received. The quality control department at the company often takes samples to check if this claim is valid. A recently taken sample of 150 order showed that 129 of them were mailed within 72 hours. Do you think the company claims is true? Use a 2.5% significance level.
Direct Mailing Company sells computers and computer parts by mail. The company claims that less than 90% of all orders are mailed within 72 hours after they are received. The quality control department at the company often takes samples to check if this claim is valid. A recently taken sample of 150 order showed that 129 of them were mailed within 72 hours. Do you think the company claims is true? Use a 2.5% significance level.
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.6: Summarizing Categorical Data
Problem 30PPS
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Direct Mailing Company sells computers and computer parts by mail. The company
claims that less than 90% of all orders are mailed within 72 hours after they are
received. The quality control department at the company often takes samples to
check if this claim is valid. A recently taken sample of 150 order showed that 129
of them were mailed within 72 hours. Do you think the company claims is true? Use
a 2.5% significance level.
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