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Solved: Cigar Smoking The data in the following table show
Chapter 4, Problem 41AYU(choose chapter or problem)
Cigar Smoking The data in the following table show the results of a national study of 137,243 U.S. men that investigated the association between cigar smoking and death from cancer. Note: Current cigar smoker means cigar smoker at time of death.
(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?
Questions & Answers
QUESTION:
Cigar Smoking The data in the following table show the results of a national study of 137,243 U.S. men that investigated the association between cigar smoking and death from cancer. Note: Current cigar smoker means cigar smoker at time of death.
(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?
ANSWER:
Step1 of 4
We have the data in the following table show the results of a national study of 137,243 U.S. men that investigated the association between cigar smoking and death from cancer.
|
Died from Cancer |
Did Not Die from Cancer |
Never smoked cigars |
782 |
120,747 |
Former cigar smoker |
91 |
7,757 |
Current cigar smoker |
141 |
7,725 |
a). The probability that he died from cancer is
Therefore, the probability that he died from cancer is 0.0073.