An aspirin manufacturer claims that its aspirin stops headaches in less than 30 min. A random sample
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An aspirin manufacturer claims that its aspirin stops headaches in less than 30 min. A random sample of 100 people who use the pain killer finds that the average time it takes to stop a headache is 28.6 min with a sample standard deviation of 4.2 min. Test, at the 5 % level of significance, the manufacturer’s claim that this product stops headaches in less than 30 min.
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Heres how to test the manufacturers claim at the 5 significance level 1 Define the hypotheses Null h...View the full answer
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Related Book For 
Statistics For Business And Financial Economics
ISBN: 9781461458975
3rd Edition
Authors: Cheng Few Lee , John C Lee , Alice C Lee
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