coffee drinking for a sample of 200o persons are distributed as in the gency table: Coffee 110 No Coffee 90 Smoker Non-Smoker 115 85 Required: a) What is the probability that a randomly selected person from the sample is a smoker? O What is the probability that a randomly selected person from the sample is a non-smoker and drinks coffee? What is the probability that a randomly selected person from the sample either non-smokes or drinks coffee ) Vhat is the probability that a randomly selected person from the sample smokes given that he inks coffee? ( e the two events "smoke" and "drink coffee" independent? Why? ( ark)
coffee drinking for a sample of 200o persons are distributed as in the gency table: Coffee 110 No Coffee 90 Smoker Non-Smoker 115 85 Required: a) What is the probability that a randomly selected person from the sample is a smoker? O What is the probability that a randomly selected person from the sample is a non-smoker and drinks coffee? What is the probability that a randomly selected person from the sample either non-smokes or drinks coffee ) Vhat is the probability that a randomly selected person from the sample smokes given that he inks coffee? ( e the two events "smoke" and "drink coffee" independent? Why? ( ark)
Chapter8: Sequences, Series,and Probability
Section8.7: Probability
Problem 4ECP: Show that the probability of drawing a club at random from a standard deck of 52 playing cards is...
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Transcribed Image Text:ks)
Suppose that smoking and coffee drinking for a sample of 200 persons are distributed as in the
following contingency table:
Coffee
110
No Coffee
90
Smoker
Non-Smoker
115
85
Required:
a) What is the probability that a randomly selected person from the sample is a smoker?
b) What is the probability that a randomly selected person from the sample is a non-smoker and
drinks coffee?
c) What is the probability that a randomly selected person from the sample either non-smokes or
drinks coffee
d) What is the probability that a randomly selected person from the sample smokes given that he
drinks coffee? (
e) Are the two events "smoke" and drink coffee" independent? Why? (
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