Question
In: Statistics and Probability
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 36.8 for a sample of size 29 and standard deviation 14.7. Estimate how much the drug will lower a typical patient's systolic blood pressure (using a 98% confidence level). Assume the data is from a normally distributed population. Enter your answer as a tri-linear inequality accurate to three decimal places.
Solutions
Expert Solution
Solution :
Given that,
t
/2,df = 2.467
Margin of error = E = t/2,df
* (s /
= 2.467 * (14.7 /
Margin of error = E = 6.734
The 98% confidence interval estimate of the population mean is,
- E < 
<
+ E
36.8 - 6.734 <
< 36.8 + 6.734
30.066 <
< 43.534
(30.066 , 43.534)
orchestra answered 2 years agoRelated Solutions
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