At a local college, 21 of the male students are smokers and 189 are non-smokers

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At a local college, 21 of the male students are smokers and 189 are non-smokers

At a local college, 21 of the male students are smokers and 189 are non-smokers. Of the female students, 90 are smokers and 210 are non-smokers. A male student and a female student from the college are randomly selected for a survey. What is the probabillty that both are smokers?

math Statistics-And-Probability

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Answer 1

Answer #1

Result:

	male	female	Total
smokers	21	90	111
non smokers	189	210	399
Total	210	300	510

P( smoker/male ) =21/210

P( smoker/female) = 90/300

P( both are smokers) = P( smoker/male )* P( smoker/female)

=(21/210)*(90/300)

=0.0300

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Answer 2

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At a local college, 21 of the male students are smokers and 189 are non-smokers

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