According to a national survey,the average commuting time for people who commute to a city with a population of 1 to 3 million is 19.0 minutes.Suppose a researcher lives in a city with a population of 2.4 million and wants to test this claim in her city.Taking a random sample of 20 commuters she calculates a mean time of 19.346 minutes and a standard deviation of 2.842 minutes.What is the critical value for $\alpha$ = .10 to test the hypotheses.
A)1.729
B)1.725
C)1.328
D)1.325
E)1.645

Question

Quizplus · Accepted Answer

The critical value for F1F1F1S1F1F1F10 = .10 to test the hypotheses is 1.729. This is because the degrees of freedom for the numerator and denominator are both 19, and the critical value for F1F1F1S1F1F1F10 = .10 with these degrees of freedom is 1.729.

According to a National Survey,the Average Commuting Time for People α\alphaα

According to a National Survey,the Average Commuting Time for People $\alpha$