The International Air Transport Association surveyed business travellers to determine ratings of various international airports. The maximum possible score was 10. Suppose 50 business travellers were asked to rate airport L and 70 other business travellers were asked to rate airport M.
At the 0.05 level of significance, is there evidence of a difference between the variances of the rating scores collected for airport L and airport M?
Formulate the hypotheses that can be used to determine whether the sample data support the hypothesis that scores mean are different between airport L and airport M.
What is the point estimate of the difference between mean rating scores for the two populations?
Based on the result obtained at point (1.), is there evidence at a = 0.05 of a difference between the mean score rate of airport L and airport M?
What is the p-value for the hypothesis test?
What is the critical value for the hypothesis test?
Rating Scores Collected
Air L:
2,7,1,7,5,9,5,3,5,8,10,3,9,8,8,4,10,2,10,5,4,8,6,7,9,10,7,5,9,5,5,9,6,10,2,3,6,5,4,4,5,6,6,4,8,4,6,4,3,3
Air M:
7,1,4,6,8,8,6,10,5,7,8,6,4,2,4,5,6,6,8,8,8,8,1,6,7,7,7,4,8,3,2,6,2,5,7,8,8,4,3,4,8,3,2,6,8,7,3,8,10,2,5,4,5,4,8,5,6,9,5,4,6,7,6,4,5,4,5,8,7,6
