Exhibit 13-5
Below you are given a partial Minitab output based on a sample of 25 observations.
$\begin{array}{lcc}&\text { Coefficient }&\text { Standard Error }\
\text { Constant } & 145.321 & 48.682 \
\mathrm{X}_{1} & 25.625 & 9.150 \
\mathrm{X}_{2} & -5.720 & 3.575 \
\mathrm{X}_{3} & 0.823 & 0.183
\end{array}$
-Refer to Exhibit 13-5. We want to test whether the parameter ?? is significant. The test statistic equals
A) 0.357
B) 2.8
C) 14
D) 1.96

Question

Exhibit 13-5
Below you are given a partial Minitab output based on a sample of 25 observations.
 $\begin{array}{lcc}&\text { Coefficient }&\text { Standard Error }\
\text { Constant } & 145.321 & 48.682 \
\mathrm{X}_{1} & 25.625 & 9.150 \
\mathrm{X}_{2} & -5.720 & 3.575 \
\mathrm{X}_{3} & 0.823 & 0.183
\end{array}$
-Refer to Exhibit 13-5. We want to test whether the parameter ?? is significant. The test statistic equals
A) 0.357
B) 2.8
C) 14
D) 1.96

Quizplus · Accepted Answer

The test statistic is calculated by dividing the coefficient of the parameter by its standard error. For X2, the test statistic is -5.720 / 3.575 = -1.6, but since the question asks for the parameter ??, which is likely X3, the test statistic is 0.823 / 0.183 = 4.5. However, none of the options match this, so assuming a typo, the closest option for X2 is B) 2.8.

Exhibit 13-5 Below You Are Given a Partial Minitab Output

Exhibit 13-5
Below You Are Given a Partial Minitab Output