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Nex is a medicine that you can use to reduce the acid produced by the body...

Nex is a medicine that you can use to reduce the acid produced by the body and heal damage to the esophagus due to acid reflux. The manufacturer of Nex claims that over 91% of patients taking Nex are cured in 8 weeks. In clinical trials, 210 out of 230 patients suffering from acid reflux disease were cured after 8 weeks. Test the manufacturer's claim at the significance level a = 0.05. Answer the following: Hypothesis testing: Ho: p versus H1: p Using the classical method: The test statistic (to two decimal places) is The critical value is: The decision is: Conclusion:
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