Please answer both questions with work. Really need help. Appreciate it! All Data attached below problem

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Please answer both questions with work. Really need help.
Appreciate it! All Data attached below problem

Please Answer Both Questions With Work Really Need Help Appreciate It All Data Attached Below Problem 1 (62.02 KiB) Viewed 21 times

Please Answer Both Questions With Work Really Need Help Appreciate It All Data Attached Below Problem 2 (90.16 KiB) Viewed 21 times

28. FILE Employee_Absences. A production manager is examining whether work shift is related to employee absenteeism. The number of days absent over the past year was tallied for random samples of 25 workers on each shift. A portion of the data is shown in the accompanying table. First Shift Second Shift Third Shift 14 5 19 7 10 9 : : : 2 9 10 a. At the 5% significance level, can the production manager conclude that the mean days of absenteeism differ among the three shifts? Does the conclusion change at the 10% significance level? Assume that days are normally distributed. b. If significant differences exist, use Fisher's LSD method at the 10% significance level to determine which shifts have different mean days of absenteeism.

40. FILE YumYum. The marketing manager at YumYum, a large deli chain, is testing the effectiveness of four potential advertising strategies. After a two-week trial period for each advertising strategy, sales were evaluated. However, since some store locations have higher customer traffic than other locations, the effect of location on sales must be controlled for within the sample. The accompanying table shows sales (in $1,000s) achieved over the 2-week trial period using each advertising strategy at three different store locations. Assume that sales are normally distributed. Newspaper only Internet only TV only Internet & TV City 511 644 585 712 Suburban 458 548 503 614 Rural 388 298 347 421 a. At the 5% significance level, can you conclude that the mean sales differ among the advertising strategies? What about the 10% significance level? b. At the 5% significance level, can you conclude that the mean sales differ across the store locations? c. If significant differences exist across advertising strategies, use Fisher's LSD method at the 10% significance level to find which strategies have different mean sales.