In the digital age of marketing, special care must be taken to make sure that programmatic ads appearing on websites align with a company's strategy, culture and ethics. For example, in 2017, Nordstrom, Amazon and Whole Foods each faced boycotts from social media users when automated ads for these companies showed up on the Breitbart website (ChiefMarketer.com). It is important for marketing professionals to understand a company's values and culture. The following data are from an experiment designed to investigate the perception of corporate ethical values among individuals specializing in marketing (higher scores indicate higher ethical values).

Marketing Managers	Marketing Research	Advertising
4	6	5
3	7	6
4	7	5
3	6	4
5	6	5
5	7	5

(a) Use a = 0.05 to test for significant differences in perception among the three groups. Find the value of the test statistic. ???? Find the p-value. (Round your answer to three decimal places.) ??? (b) At the a = 0.05 level of significance, we can conclude that there are differences in the perceptions for marketing managers, marketing research specialists, and advertising specialists. Use the procedures in Section 13.3 to determine where the differences occur. Use a = 0.05. (Use the Bonferroni adjustment.) Find the value of LSD. (Round your comparisonwise error rate to four decimal places. Round your answer to three decimal places.) LSD = ???? Find the pairwise absolute difference between sample means for each pair of treatments. XMM-XMR = ?? XMM XA = ?? XMRXA = ??