MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
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An airline company is interested in improving customer satisfaction rate from the 74% currently claimed. The company sponsored a survey of 267 customers and found that 205 customers were satisfied.
What is the test statistic z?
What is the p-value?
Does sufficient evidence exist that the customer satisfaction rate is higher than the claim by the company at a significance level of α=0.05?yes or no
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- Consider a drug that is used to help prevent blood clots in certain patients. In clinical trials, among 6073 patients treated with this drug, 160 developed the adverse reaction of nausea. Use a 0.05 significance level to test the claim that 3% of users develop nausea. Does nausea appear to be a problematic adverse reaction? Find the test statistic and the P valuearrow_forwardWhat is your z-test statistic?arrow_forwardIdentify the P-value. What is the conclusion for this test?arrow_forward
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