Please answer part (b) Select all the answers applied People who eat lots of fru

Question

Please answer part (b)

Select all the answers applied

People who eat lots of fruits and vegetables have lower rates of colon cancer than those who eat little of these foods. Fruits 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. The subjects were divided into four groups: daily beta-carotene, daily vitamins C and E, all three vitamins every day, or daily placebo. After four years, the researchers were surprised to find no significant difference in colon cancer among the groups (a) What is the treatment and response in this experiment? Treatment o whether or not subjects consumed beta-carotene, vitamins C and E or both each day whether or not colon cancer develops at risk or not of colon cancer type of food (fruit and vegetables or neither) type of food (fruit and vegetables or neither) at risk or not of colon cancer whether or not subjects consumed beta-carotene, vitamins C and E or both each day whether or not colon cancer develops (b) Outline the design of the experiment. Use your judgment in choosing the group sizes. (Select all that apply.) Randomly assign subjects to 4 groups. Observe the occurrence of colon cancer Randomly assign subjects to 2 groups Observe eating habits. Randomly assign 2 treatments to 2 groups. Randomly assign 4 treatments to 4 groups. Randomly assign 2 treatments to 4 groups.

Explanation / Answer

Question B

Answer:

1. Randomly assign subjects to 4 groups

2.observe the occurance of colon cancer.

6. Randomly assign 4 treatments to 4 groups.

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