Question
The effectiveness of a blood-pressure drug is being investigated. An experimenter finds that, on average, the...
The effectiveness of a blood-pressure drug is being
investigated. An experimenter finds that, on average, the reduction
in systolic blood pressure is 20.5 for a sample of size 962 and
standard deviation 14.1.
Estimate how much the drug will lower a typical patient's systolic
blood pressure (using a 80% confidence level).
Enter your answer as a tri-linear inequality accurate to one
decimal place (because the sample statistics are reported accurate
to one decimal place).
？< μ < ？
Answer should be obtained without any preliminary rounding.
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Answer #1
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