Chapter 9.3, Problem 1.3CYU

To determine

To compute: The P -value using the technology and check whether it is matching with the value that has been obtained in previous problem.

Answer to Problem 1.3CYU

The P -value is 0.221.

Explanation of Solution

Given:

  $\begin{array}{l}\text{Degree of freedom }\left(df\right)=17\\ \text{Test statistic}\left(t\right)=1.27\end{array}$

Calculation:

The P -value technology can be computed as:

The above value is for one tailed.

The P -value for two tailed can be calculated as:

  $\begin{array}{c}P-value=2\times 0.1105\\ =0.221\end{array}$

Here, also the P -value is 0.221.

Thus, it could be said that the obtained P -value is matching to the value that has been computed in the previous problem.