Question

Investigators reported the resuls of a study designed to assess whether or not St. John's Nort is effective in treating m cases of depression. The study involved 338 subjects, randomly assigned to receive one of three treatments. TH results are presented below: St. John's Wort Placebo Zoloft Total Full Response 27 Partial response 16 No response 70 Total 37 91 27 26 56 192 109 338 13 113 116 What is the probability that a randomly selected subject had no response or was treated with Zoloft? O a Ans. not listed b. 791338 с. 271338 O d. 43/113 e. 116/338 O f. 79/247 O9-66/338 h. 245/338 . 27/109

Answer 1

1)P(no response or was treated with Zoloft) =(192+109-56)/338 =245/338

option H is correct