Question

The effectiveness of a blood-pressure drug is being investigated. An experimenter finds that, on average, the reduction in systolic blood pressure is 73.5 for a sample of size 854 and standard deviation 17.6. Estimate how much the drug will lower a typical patient's systolic blood pressure (using a 98% confidence level).

Answer 1

To estimate how much the blood pressure drug will lower a patient's systolic blood pressure, we can use confidence interval estimation.

Step-by-step explanation:

To estimate how much the blood pressure drug will lower a typical patient's systolic blood pressure, we can use confidence interval estimation. Given a sample mean reduction of 73.5 and a sample size of 854, with a standard deviation of 17.6, we can calculate the margin of error using the formula: margin of error = critical value * standard error, where critical value is obtained from the standard normal distribution table for a 98% confidence level. We can then construct the confidence interval by subtracting the margin of error from the sample mean and adding it to the sample mean. The result will give us an estimate of the range within which the true average reduction in systolic blood pressure lies.