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A medical study wanted to test the claim that stent implantation was less effective for clearing arteries...

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Statistics

Amedical study wanted to test the claim that stent implantation wasless effective for clearing arteries of plaque than medical therapyalone. 15.6% of the patients treated with medical therapy aloneexperienced another cardiovascular event (heart attack, stroke ordeath) within four years of their surgery. 187 of the 1,083patients treated with stent implantation experienced anothercardiovascular event (heart attack, stroke or death) within fouryears of their surgery. Test the medical study's claim at a 0.01level of significance that more patients suffered a heart attack, astroke or died after their surgery.

Answer & Explanation Solved by verified expert
3.6 Ratings (463 Votes)
Let p be the true proportion of patients treated with stentimplantation experienced another cardiovascular event within fouryears of their surgeryNull Hypothesis H0 p 0156Alternative Hypothesis H0 p 0156np1p    See Answer
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