Chapter 9.3, Problem 3.1CYU

To determine

To explain: Whether it could be concluded by the results that the mean blood pressure for the middle-aged male employees of company is different from that of the national average.

Answer to Problem 3.1CYU

No, it could not be concluded that the mean blood pressure for the middle-aged male employees of company is different from that of the national average

Explanation of Solution

Given:

The output is:

Calculation:

The null and alternative hypotheses are:

  $\begin{array}{l}{H}_0:\mu =128\\ H_a:\mu \ne 128\end{array}$

Here, p -value (0.275) >$\alpha \left(0.05\right)$ . The null hypothesis is not rejected.

At 5% significance level, there 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.