Answer: b. .8
Step-by-step explanation:
We find F-test statistic for testing whether two population have equal variances.
As per given , we have
In population 1 .
Samples size : [tex]n_1=60[/tex]
Sample variance : [tex]s^2_1=8[/tex]
In population 2 .
Samples size : [tex]n_2=40[/tex]
Sample variance : [tex]s^2_2=10[/tex]
If we want to test whether the variances of the two populations are equal, then the test statistic will have a value of [tex]F=\dfrac{s_1^2}{s_2^2}[/tex]
[tex]=\dfrac{8}{10}=0.8[/tex]
Hence, the value of test-statistic = 0.8
Thus , the correct answer = b. .8
