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Suppose you are given a sample of 18 systolic blood pressures having a mean of 121...

Suppose you are given a sample of 18 systolic blood pressures having a mean of 121 mmHg and a sample standard deviation of 10 mmHg. You need to construct a 95% confidence interval around the true population mean systolic blood pressure. What would be the critical value you would use for this confidence interval?

Select one:

a. 2.086

b. 1.960

c. 2.101

d. 1.740

e. 2.110

math   Statistics-And-Probability   
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Answer #1

DATE: -Solution x = 121 S= 10 n= 18 degrees of freedom-n-1 = 18-1-17 At 95% confidence level tlet is 二 0.02 A gso Confidence

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