A gastrointestinal stromal tumor is a rare form of cancer that develops in muscle tissue and blood vessels within the stomach or small intestine. In a study, 600 subjects had surgery to remove the tumor. For one year after surgery, 300 subjects took a drug and 300 subjects took a placebo.

The results are shown below. At = 0.10, can you support the claim that the proportion of subjects who are cancer-free after one year is greater for subjects who took the drug than for subjects who took a placebo?

Transcribed Image Text:

Are You Cancer-Free One Year After Surgery? No No 9 51 Yes Yes 291 249 Drug Placebo Are You Cancer-Free One Year After Surgery? No No 9 51 Yes Yes 291 249 Drug Placebo