Homework: hw-5.2 Score: 0 of 1 pt 5.2.37 40f 4 (0 complete) HW Score: 0 Question

Question

Homework: hw-5.2 Score: 0 of 1 pt 5.2.37 40f 4 (0 complete) HW Score: 0 Question The data in the follwing table show the association between cigar smoking and death fom cancer for 136 348 men Note curent cigar smoker mears time of death Click the icon to view the table (a) If an individual is randomly selected from this study, what is the probability that he died from cancer? (b) If an individual is randomly selected from this study, what is the probability that he was a current cigar smoker? (c) If an individual is randomly selected from this study, what is the probability that he died from cancer and was a current cigar smoker? (d) If an individual is randomly selected from this study, what is the probability that he died from cancer or was a current cigar smoker? (a) Pidied from cancer)- (Round to three decimal places as needed.) Enter your answer in the answer box and then click Check Answer remaining

Explanation / Answer

                                      died of cancer       did not die                  Total

Naver smoke                            787    118988 119775

Former smoke 50 7297    7347

Currect smoke    153 9073    9226

Total 990    135358    136348

(a) P(Died of cancer) = 990/136348 = 0.007261

(b) P(Dired of cancer & Currect smoker) = 153/136348 =     0.001122

(c) P(current smoker) = 9226/136348 = 0.0677

P(Died of cancer OR Currect smoker) = P(Died of cancer) + P(Current smoker) - P(Died of cancer & Currect smoker) = 0.007261 + 0.0677 - 0.001122

= 0.074

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