# Z-score, Critical Values, Hypothesis

1. Population blood pressure (BP) of patients is normally distributed, with a mean of 127, and standard deviation of 8. A random sample of 49 patients in the hospital found an average BP of 125. Find the z score

test value, list the critical values (alpha = 5%), and indicate the hypothesis test results for a

a) one-tailed (right)

https://brainmass.com/statistics/z-test/population-blood-pressure-patients-315138

#### Solution Preview

mu = 127, sigma = 8, x-bar = 125, n = 49

Ho: mu <= 127 vs Ha: mu > 127

Critical right-tail z- ...

#### Solution Summary

A complete, neat and step-by-step solution is provided with regards to statistical problems relating to population blood pressure.

$2.19