Independent Random Samples Were Selected from Each of Two Normally $\begin{array} { l l l l l l l l } \text { Population 1: } & 2.5 & 3.1 & 2.3 & 1.8 & 4.2 & 3.5 & 3.9 \end{array}$

question 84

Multiple Choice

Independent random samples were selected from each of two normally distributed populations, n1 = 7 from population 1 and n2 = 9 from population 2. The data are shown below. $\begin{array} { l l l l l l l l } \text { Population 1: } & 2.5 & 3.1 & 2.3 & 1.8 & 4.2 & 3.5 & 3.9 \end{array}$

$\begin{array} { l l l l l l l l l l l } \text { Population 2: } & 2.9 & 1.7 & 4.6 & 3.5 & 3.7 & 2.8 & 4.6 & 3.4 & 1.9 \end{array}$

Find the test statistic for the test of $H _ { 0 } : \sigma _ { 1 } ^ { 2 } = \sigma _ { 2 } ^ { 2 }$ against $H _ { a } : \sigma _ { 1 } ^ { 2 } \neq \sigma _ { 2 } ^ { 2 }$ .

• A) 1.36
• B) .735
• C) 1.17
• D) .857

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