11.13 Concerned about Friday absenteeism, management examined absenteeism rates for the last three Fridays ...

      (a) State the hypotheses. If you are viewing this data   set as a randomized block, which is the blocking factor, and why? (b) Use   Excel’s Tools > Data Analysis (or MegaStat or MINITAB) to perform the   two-factor ANOVA without replication, using α = .05. (c) State your   conclusions about the treatment means. (d) Interpret the p-values carefully.   (e) Include a plot of the data for each group if you are using MegaStat, or   individual value plots if you are using MINITAB. What do the   plots show?        11.13   Concerned about Friday absenteeism, management examined absenteeism rates for   the last three Fridays in four assembly plants. Does this sample prove that   there is a significant difference in treatment means?       Plant   1 Plant 2 Plant 3 Plant 4   March   4 19 18 27 22   March   11 22 20 32 27   March   18 20 16 28 26