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{"ops":[{"insert":"A psychiatrist is testing a new antianxiety drug, which seems to have the potentially harmful side effect of lowering the heart rate. For a sample of 50 medical students whose pulse was measured after 6 weeks of taking the drug, the mean heart rate was 70 beats per minute (bpm). If the mean heart rate for the population is 72 bpm with a standard deviation of 12, can the psychiatrist conclude that the new drug lowers heart rate significantly \u00a0(Set the level of significance to 0.01.)\u00a0\n\nSOLUTIONS:\nStep 1: State the hypotheses.\nHo:\u00a0\nHa:\nStep 2: The level of significance and the critical region. \ud835\udefc = _____, \ud835\udc50\ud835\udc5f\ud835\udc56\ud835\udc61\ud835\udc56\ud835\udc50\ud835\udc4e\ud835\udc59 \ud835\udc63\ud835\udc4e\ud835\udc59\ud835\udc62\ud835\udc52 = _____.\u00a0\nStep 3: Compute for the value of one sample test.\n\ud835\udc50\ud835\udc5c\ud835\udc5a\ud835\udc5d\ud835\udc62\ud835\udc61\ud835\udc52\ud835\udc51 \ud835\udc61\ud835\udc52\ud835\udc60\ud835\udc61 \ud835\udc63\ud835\udc4e\ud835\udc59\ud835\udc62\ud835\udc52 = _______.\u00a0\nStep 4: Decision rule.\nStep 5. Conclusion.\n"}]}
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