Pls show all workings. Thx. Five business people who fiy frequently were asked t
ID: 3378219 • Letter: P
Question
Pls show all workings. Thx.
Five business people who fiy frequently were asked to evaluate four airlines that they have used before based on 20 questions on 5-point Likert scale. The results are shown below: Test at the 5% level of significance if the variance of scores for airline D is less than 150. Provide a 95% lower-sided confidence interval for the true variance. Test at the 5% level of significance if the variances of scores for airlines B and D differ. Provide a 95% 2-sided confidence interval for the ratio of true variances. Test at the 5% level of significance if the mean scores differ across airlines using the Friedman test.Explanation / Answer
Pls show all workings. Thx. Five business people who fiy frequently were asked t