Company A claims that 75% of their customers are very satisfied with the service they receive. To test the claim, a certain group of researchers surveyed 600 customers, using simple random sampling. Among the sampled customers, 430 say they are very satisfied. Assume that the sample is sufficiently large for the relevant test to be validly performed. Based on these findings, can we reject the Company A's hypothesis that 75% of the customers are very satisfied? Use a 0.05 level of significance.
Company A claims that 75% of their customers are very satisfied with the service they receive. To test the claim, a certain group of researchers surveyed 600 customers, using simple random sampling. Among the sampled customers, 430 say they are very satisfied. Assume that the sample is sufficiently large for the relevant test to be validly performed. Based on these findings, can we reject the Company A's hypothesis that 75% of the customers are very satisfied? Use a 0.05 level of significance.
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:2022.04.22 21:46
2. Company A claims that 75% of their customers are very satisfied with the
service they receive. To test the claim, a certain group of researchers
surveyed 600 customers, using simple random sampling. Among the
sampled customers, 430 say they are very satisfied. Assume that the
sample is sufficiently large for the relevant test to be validly performed.
Based on these findings, can we reject the Company A's hypothesis that
75% of the customers are very satisfied? Use a 0.05 level of significance.
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