Question

Use the information below to answer the CANCER SURVIVAL questions that follow. Data originally from DASL http://lib.stat.cmu.edu/DASL/Datafiles/CancerSurvival.html e. Some bronchial cancer patients had the following survival times (in days) after receiving a certain treatment: 20, 37, 63, 64, 72, 81, 138, 151, 155, 166, 166, 223, 245, 246, 450, 459. (The second instance of "166" is not a mistake.) Do these numbers suggest that the average survival time, for all bronchial cancer patients who receive that treatment, is significantly different from 200 days?

Answer 1

Tel. The heating the null t allemachine hypothesis, Hoi ll = 200 Ha! u 7200 level of signift cance The test statistic is dc0.10. t= x - 4 sln Calculating n 16 Treatments (X): 20, 37, 63, 64, 72, 81, 138, 151, 155,166,166, 223, 245, 246 450, 459. X= ΣΧ 2736 16 X = 171 8 = scxi-7) 258156 16-1 258156 15 S = 131.1884 Test statistic, 171 - 200 -29 ta 131,1884/J16 131. 1884/4 + 0.88 df = n1 = 16-1= 15. & 220.10

: p-value- PCt> -0,88 ) +P(t< 0.88 = 0.1952 to. 1952 p-value=0.3905 P-value = 0.39) opHon (a) is correct