Please help me with these questions

PLEASE WRITE YOUR RESPONSES ON PAPER. SHOW AS MANY STEPS AS NEEDED TO JUSTIFY YOUR ANSWER. SCAN AND UPLOAD. A study was conducted to examine the effects of active recovery (AR), massage (MR), and cold water immersion (CR) on performance of repeated bouts of high-intensity cycling separated by 24 hours. A sample of physically active men aged 18-30 were randomly assigned to one of four groups. Each group performed an intense 18 minute cycling work out after which each underwent a 15 recovery period. The first group (AR) continued to cycle at a low level, the second group (MR) received leg massage, the third group (CR) immersed their legs in a bath of cold water. The last group simply sat and rested. The next day the subjects did the same intense 18 minute cycling workout. Each exercise was done on a cycle ergometer so that the work level (measure in kilojoules) was calculated for each. The researchers found that on the second day, that there was no difference in the performance level of the subjects in the AR, MR and CR, but that the subjects who just sat in a chair to rest did less work than the other groups. (Journal of Strength and Conditioning Research (2004; 18 [4]. 855-60). a. What question is the researcher trying to answer with data? b. Is the study an observational study or an experiment? If it is an experiment give the explanatory variable and the response variable. If it is an observational study give the population and the sample. c. How did the researcher collect sample data in each group that is representative of the population? d. Summarize, interpret and analyze the sample data. e. State the results and conclusion of the study.Students' score on the statistics final exam Question 10 6 pts Lulu is interested in number of hours of overtime that non-salaried workers at her company work per week. She divides the workers into morning, midday, and evening shifts. She then uses a random number generator to randomly select proportionally from each shift group. The sampling method used was: O simple random sample (SRS) O stratified random sample O systematic sample cluster sample Question 11 6 pts