W d) Summarize the conclusions and comment on the generalizability of the study results. CO : : : : { . answer data-latex="{3}"} O ! - - Enter your written answer here - -> DUNKU Knit on Save ABC Knit c Run . . = A 204 ### Problem 7 (12 points). 205 206 Caffeine is the world's most widely used stimulant, with approximately 80\\% consumed in the form of coffee. Suppose a study was conducted to investigate the relationship between coffee consumption and exercise. Participants were randomly recruited from the undergraduate and graduate student populations of universities in the Boston/Cambridge area. Participants were asked to report the number of hours they spent per week on moderate (e. g. , brisk walking) and vigorous (e.g., strenuous sports and jogging) exercise. Based on these data, the researchers estimated the total hours of metabolic equivalent tasks (MET) per week, a value always greater than 0. The \\texttt {coffee . exercise} data frame contains simulated MET data for the study participants, based on the amount of coffee consumed. The consumption groups are labeled \\texttt {A - E}. 207 208 - \\texttt {A}: 1 cup or less of caffeinated coffee consumed per week 209 - \\texttt{B}: 2 to 6 cups of caffeinated coffee consumed per week 210 - \\texttt{c}: 1 cup of caffeinated coffee consumed per day 211 - \\texttt {D}: 2 to 3 cups of caffeinated coffee consumed per day 212 - \\texttt{E}: 4 or more cups of caffeinated coffee consumed per day 213 214 a) Create a plot that shows the association between MET score and coffee consumption. Describe what you see. 215 216 : : :: { . answer data-latex="{3}"} 217 {r } 218 219 - 220 221 222223 224 Conduct an analysis to determine whether the average physical activity level varies among the different levels of coffee consumption. 225 226 b) Assess whether the assumptions for the analysis method are reasonably satisfied. 227 228 : :: { . answer data-latex="{3}"} 229 {r } 230 231 - 232 233 234 : 235 236 c) Perform the analysis - perform an ANOVA test and follow up with the required pairwise testing. 237 238 : : : : { . answer data-latex="{3}"} 239 - {r} 240 241 - 242 243 244 245 R Markdown