In a population of 10,000, beta carotene was given to 6000; it was not
given to the remainder. 3 out of the first group got lung cancer while 2 out of
the other 4000 also got lung cancer. The best conclusion is:
A. Beta carotene and lung cancer have no relation to one another
B. The p value is not significant
C. The study is not designed properly
D. Beta carotene is associated with lung cancer
Ans. A
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