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# What is the conditional probability of A given B? Are A and B independent in a probability sense?

What is the conditional probability of A given B? Are A and B independent in a probability sense? D) The probability of A is 0.30 and the probability of B is 0.40 and the probability of both is 0.30. What is the conditional probability of A given B. Are A and B independent in a probability sense? 6) A student committee has six members -four undergraduate and two graduate students. A subcommittee of three members is to be chosen randomly so that each possible combination of three of the six students are equally likely to be selected. What is the probability that there will be no graduate students on the subcommittee? 7) A music store owner nds that 30% of the customers entering the store ask for help and that 20% of the customers make a purchase before leaving. It is also found that 15% of all customers both ask for assistance and make a purchase. What is the probability that a customer does at least one of those things?

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