Concept explainers
To interpret: The 95% confidence interval.
Explanation of Solution
Given:
The output is:
Calculation:
From the provided Minitab output, the 95% confidence interval is (126.43, 133.43). Thus, it could be concluded that there are 95% chances that the mean systolic blood pressure of males that are of age 35-44 lies between 126.43 and 133.43.
Since, the value of 128 lies in the computed confidence interval. Thusthere are insufficient evidence to conclude that the mean blood pressure for the middle-aged male employees of company is different from that of the national average.
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