O Question 9 < The effectiveness of a blood-pressure drug is being investigated. An experimenter finds that, on average,

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O Question 9 The Effectiveness Of A Blood Pressure Drug Is Being Investigated An Experimenter Finds That On Average 1 (33.78 KiB) Viewed 30 times

O Question 9 < The effectiveness of a blood-pressure drug is being investigated. An experimenter finds that, on average, the reduction in systolic blood pressure is 32.9 mmHg (millimeters of mercury) for a sample of size 764 and a sample standard deviation 5.7 mmHg. How much of mmHg will lower for a typical patient's systolic blood pressure after taking the drug? Estimate with a 80% confidence. Preliminary: b. Is n ≥ 30 ? Yes O No > a. Is it safe to assume that n < 5% of all patients with a systolic blood pressure? No Yes Confidence Interval: What is the 80% confidence interval to estimate the population mean? Round your answer to one decimal place. Question Heln: Post to forum <fte