Q5/ An urn contains 10 white, 5 yellow, and 10 black marbles. A marble is chosen at random from the urn, and it is noted that it is not one of the black marbles. What is the probability that it is yellow? Ans. (P(Y/B")=113) Q6/ A random sample of 200 adults are classified below by sex and their level of education attained. Education Elementary Secondary College Male Female 38 45 28 50 22 17 If a person is picked at random from this group, find the probability that: the person is a male, given that the person has a secondary education; • the person does not have a college degree, given that the person is a female, Ans. (P(M/S)=28/78; P(CIM )=95/112)

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