The answer is 71.4 miles per hour
Answer:
A quick comparison of the sample variances suggests that the population variances <u><em>are same or almost equal.</em></u>
Step-by-step explanation:
The populations from which two samples are drawn are normally distributed.
The variable used to predict another variable is called an independent variable.
F- distribution is used for the test of two sample hypotheses of variances.
If two populations have equal variances then the test Statistic is nearly equal to 1.
<em>t= s²₁/s²₂i</em>
<em />
As the variances are almost or nearly equal the test statistic would be almost equal to 1.
After simplifying the expression, we get 18a^6b^9
Which tells us choice C is correct.
Have a great day! Let me know if you have more questions.
~Brooke❤️
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