<prompt> In a population of 10,000, beta carotene was given to 6000 people. The remainder did not receive any carotene. 3 out of the first group later suffered from lung cancer while 2 out of the secornd group non-recepients also got lung cancer. What is your reasonable conclusion?Beta carotene and lung cancer have no relation to each otherThe p value is not significantThe study is not designed properlyBeta carotene is associated with lung cancer  <response>: The question reveals the following facts: Carotene intake Lung cancer present No lung cancer Total YES 3 5997 6000 NO 2 3998 4000 Disease among exposed: Out of 6000 people who were given beta carotene 3 developed lung cancer: 3600012000 Out of 4000 people who did not receive 2 developed carcinoma: 24000 12000 This means that the same fraction of people developed lung cancer irrespective of whether they were or were not given beta carotene.No difference is found in incidence. Relative risk: Incidence of disease among exposed 12000 --- --- 1 Incidence of disease among non exposed 12000 Relative risk 1 denotes that there is no means of association Results thus clearly show that beta carotene and Lung cancer have no relation to each other. Ref:Parks Textbook of Preventive and Social Medicine By K. Park, 18th Edition, Pages 56, 72 