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The effectiveness of a blood-pressure drug is being investigated. An experimenter finds that, on average, the...

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Statistics

The effectiveness of a blood-pressure drug is beinginvestigated. An experimenter finds that, on average, the reductionin systolic blood pressure is 20.7 for a sample of size 464 andsample standard deviation 21.4.

Estimate how much the drug will lower a typical patient's systolicblood pressure (using a 99% confidence level).

Enter your answer as a tri-linear inequality accurate to onedecimal place (because the sample statistics are reported accurateto one decimal place).

< μμ <



Answer should be obtained without any preliminaryrounding.

d) Interpret the confidence interval in the words of theproblem.

Answer & Explanation Solved by verified expert
3.6 Ratings (282 Votes)
Given that 207s 214n 464Degrees of freedom df n 1    See Answer
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