pleae answer question

A B C D E F G Placebo Ritalin.10m Ritalin.17.5 Adderall.7. Adderall.12.5mg 38 55 66 69 81 2 40 74 84 59 84 47 80 63 74 91 4 51 70 72 67 89 49 79 71 75 72 42 82 68 79 73 39 77 64 91 83 35 73 75 68 86(1 point) Willam E. Pelham et al. studied the how different levels of Ritalin and Adderall had on a child's ability to follow rules when the child is diagnosed with attention deficit hyperactivity disorder, or ADHD. The study involved the random assignment of children to one of five treatment groups: placebo, 10 mg Ritalin, 17.5 mg of Ritalin, 7.5 mg ofAdderall, or 12.5 mg ofAdderaII. Each child was to take their treatment twice a day. The response variable was a score which measured the child's ability to follow rules. The higher the score, the better the ability the child has to follow the rules. The data can be found in the Download .csv fi|-. Use or = 0.05 for any statistical tests. You will have to stack the data, try using the R command stack(data[2:6])...if you named the data file, data. (a) Using the technology available to you, create boxplots of the data. What do these boxplots tell you about the variation in the score between the different treatments? Choose the most appropriate answer. A. The Normal distribution condition of the score does not seem to hold here - a childs score is not Normally distributed for each of the five treatments. O B. The variation in a child's score does not seem to depend on the treatment. C. The Normal distribution condition of the score seems to hold - a childs score is Normally distributed for each of the five treatments. O D. The variation in a child's score seems to depend on the treatment. (b) Does this data suggest that the variance of a childs score is the same for all treatments? Find the value of the test statistic and its P-value and base your decision on a = 0.05. Test Statistic = (use at least two decimals in your answer) P-value = (use at least four decimals in your answer) (c) Does the data indicate that a childs score is the same for each of the five treatments? Select the appropriate statistical hypotheses below, and in doing so consider your findings in part (b). O A. Ho : MPlacebo = MRita10mg = MRita17.5mg = MAdd7.5mg = / Add12.5mg HA : MPlacebo # MRitalomg # MRita17.5mg # MAdd7.5mg # MAdd12.5mg O B. Ho : X Placebo = X Ritalong = X Rita17.5mg = X Add7.5mg = X Add12.5mg HA : at least one X; is different O C. Ho : MPlacebo - MRitalomg = M Rita17.5mg = M Add7.5mg = M Add12.5mg HA : at least one ju; is different O D. Ho : MPlacebo = MRitalomg = MRita17.5mg = MAdd7.5mg = MAdd12.5mg HA : at least one Mi is different