Question

2. An article in the Journal of the American Medical Association reports the results of a

Answer 1

Answer:

a.  113/338

b. The relative frequency distribution is presented as follows;

${}$                                      St. John's wort              Zoloft                 Placebo

Full response ${}$               27/91                             27/91                  37/91

Partial response ${}$           16/55                             26/55                13/55

No response ${}$                35/96                            7/24                    11/32

c. 29.67%

Step-by-step explanation:

a. The proportion of subjects assigned to take St. John wort is found as follows;

The total number of subjects = 27 + 27 + 37 + 16 + 26 + 13 + 70 + 56 + 66 = 338 subjects

The number of subjects assigned to take St. John wort = 27 + 16 + 70 =  113

The proportion of subjects assigned to take St. John wort = 113/338

b. The distribution of change in depression response using relative frequency is found as follows;

Total full response = 27 + 27 + 37 = 91

Total partial response = 16 + 26 + 13 = 55

No response = 70 + 56 + 66 = 192

${}$                                      St. John's wort              Zoloft                 Placebo

Full response ${}$               27/91                             27/91                  37/91

Partial response ${}$           16/55                             26/55                13/55

No response ${}$                35/96                            7/24                    11/32

c. The percentage of subjects that took Zoloft and showed full response is given as follows;

The percentage of subjects that took Zoloft and showed full response = 27/91 × 100 = 29.67%