Test Hypotheses Regarding the Difference of Two Independent Means
-Find $t$

question 101

Multiple Choice

Test Hypotheses Regarding the Difference of Two Independent Means
-Find the standardized test statistic, $t$ , to test the hypothesis that $\mu _ { 1 } < \mu _ { 2 }$ . Two samples are randomly selected and come from populations that are normal. The sample statistics are given below.
$$\begin{array} { l l } \mathrm { n } _ { 1 } = 15 & \mathrm { n } _ { 2 } = 15 \\\overline { \mathrm { x } } 1 = 22.02 & \overline { \mathrm { x } } 2 = 24.57 \\\mathrm {~s} 1 = 2.9 & \mathrm {~s} _ { 2 } = 2.8\end{array}$$

• A) \(- 2.450\)
• B) \(- 3.165\)
• C) \(- 1.667\)
• D) \(- 0.669\)

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