Comparing Means of Two or More Populations – Example Step 1: State the null and alternate hypotheses.
{"Image DocumentName": "Comparing Means of Two or More Populations \u2013 Example", "Image ImageDescription": "LO5. Comparing Means of Two or More Populations \u2013 Example. Recently a group of four major carriers joined in hiring Brunner Marketing Research, Inc., to survey recent passengers regarding their level of satisfaction with a recent flight. The survey included questions on ticketing, boarding, in-flight service, baggage handling, pilot communication, and so forth. Twenty-five questions offered a range of possible answers: excellent, good, fair, or poor. A response of excellent was given a score of 4, good a 3, fair a 2, and poor a 1. These responses were then totaled, so the total score was an indication of the satisfaction with the flight. Brunner Marketing Research, Inc., randomly selected and surveyed passengers from the four airlines. American Delta United US Airways. Is there a difference in the mean satisfaction level among the four airlines? Use the .01 significance level", "Image XResolution": "37", "Image YResolution": "37", "Image ResolutionUnit": "Pixels/Centimeter", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}