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Given a family with three children, find the probability of the event. The oldest two are girls, given that the oldest is a girl. The probability that the oldest two are girls, given that the oldest is a girl is (Simplify your answer. Type an integer or a fraction.)A certain prescription drug is known to produce undesirable side effects in 40% of all patients who use the drug. Among a random sample of eight patients using the drug, find the probability of the stated event. None have undesirable side effects. The probability of no patients having undesirable side effects is (Simplify your answer. Type an integer or a decimal rounded to three decimal places as needed.)When treated with an antibiotic, 92% of all the dolphins are cured of an ear infection. If 8 dolphins are treated, find the probability that exactly 3 are cured. The probability is (Round your answer to 4 decimal places.)Find the probability that at most 2 heads occured when 5 fair coins are tossed. The probability that at most 2 are heads is (Type an integer or decimal rounded to the nearest thousandth as needed.)