Question

1 pts Question 7 Exhibit 12-3 In order to determine whether a particular medication was effective in curing the common cold, one group of patients was given the medication, while another group received sugar pills. The results of the study are shown below. Patients Cured Patients Not Cured Received medication 70 Received sugar pills 50 We are interested in determining whether the medication was effective in curing the common cold. Refer to Exhibit 12-3. The test statistic is 1.645 10.08 1.96 54.02

Answer 1

sol Given that Patients cured Patients hot cured Total 70 10 80 Received medication Received sugur Pills so ervedells Total 20 90 70 isol 60 Q. 70, 012 510 , 021,20, 022 - 50. Expected frequency - Rowsum x column sum Total Eri = 80790 = 48, Ee, - 70X90 -42 ISO ISO Ele - 80X60 -32, E22 = 70 x60 = 28 ISO ISO Test statistic (x2) = Ę (o:- File Eil xºs (o- H)2 + 48 - + ( 4 (10-32)2 - (50-28)2 (20-42)2 42 32 28 = 10.083 + 15.125+ 11.523 +17.285 m2 =54010 4 54.02 (option:d) -