Question: Studies show that 68 percent of people who eat fruits and vegetables have lower rate of colon cancer than those eat little of these foods. Fruit and vegetables are rich in “antioxidants” such as vitamins A, C, and E. Will taking antioxidants help prevent colon cancer? A medical experiment studied this question with 864 people who were at risk of colon cancer and were given vitamin A, C, and E daily. After four years, the researchers found that 602 of them showed no sign of colon cancer. Do antioxidants prevent cancer?

Given information

\(n=864,\,\,x=602\)

Appropriate formula to be used

Solution and interpretation