Question

The effectiveness of a blood-pressure drug is being investigated. An experimenter finds that, on average, the reduction in systolic blood pressure is 42.8 mmHg (millimeters of mercury) for a sample of size 493 and a sample standard deviation 17.5 mmHg. How much of mmHg will lower for a typical patient's systolic blood pressure after taking the drug? Estimate with a 98% confidence.

Preliminary:

1. Is it safe to assume that n≤5% of all patients with a systolic blood pressure?
   • No
   • Yes
   
   
2. Is n≥30 ?
   • Yes
   • No

Confidence Interval:What is the 98% confidence interval to estimate the population mean? ROUND ANSWER TO ONE DECIMAL PLACE!!!!!!

? < μ < ?

Answer 1

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