Unit 7 Lab A: Hypothesis Test about the Difference Between Two Population Means
Read the following case and test the hypothesis:
Sample satisfaction scores about the two retailers by the customers are shown below. In the report, 100 means the respondent is completely satisfied. Assume that a population standard deviation of 12 is a reasonable assumption for both retailers. Conduct the hypothesis test and report the p-value. At a .05 level of significance what is your conclusion?
Retailer ARetailer BSample size = 25Sample size = 30Sample mean = 79Sample mean = 71
Unit 7 Lab B: Goodness of Fit Test
Read the following case and provide answers to all the questions:
The Harris Poll reported that professional football is the favorite sport at 33% of Americans followed by baseball at 15%, men’s college football at 10%, auto racing at 6%, men’s professional basketball at 5%, and ice hockey at 5%, with other sports at 26%. Consider a survey in which 344 college undergraduates were asked to identify their favorite sport produced the following results:
Professional FootballBaseball Men’s College FootballAuto RacingMen’s Professional BasketballIce HockeyOther Sports111394614620108
Do college undergraduate students differ from the general public with regard to their favorite sports? Use α =.05
Please provide them in 2 seperate attachments. Thank you!