Assuming that boy and girl are equally likely, what would Kathy's probability of having three daughters if she were to have four children?
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Assuming that boy and girl are equally likely, what would Kathy's probability of having three daughters if she were to have four children?
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- Part C: At the Iron Bank, 62% of customers have checking accounts, 24% have savings accounts, and 17% have both checking and savings accounts. Of the Iron Bank customers who hold checking accounts, what percentage also have a savings account? • Part D: With the same numbers from Part C, what is the probability that an Iron Bank customer has neither a checking account nor a savings account? • Part E: Again with the same numbers from Part C, what proportion of Iron Bank customers have a savings account but not a checking account?A group of friends plans to have a picnic in the park, but the weather forecast shows a 60% chance of rain. If three friends decide to go ahead with the picnic regardless of the weather, what is the probability that exactly two of them will get rained on?There is a 50% chance that a father carries the gene of a certain disease. If he is a carrier, then each of his children has a 50% chance of having the disease independently. If the father is not a carrier, a child will not have the disease. Suppose the father has had three children without the disease. What is the probability the father is a carrier?
- Given that 20 books in a shipment of 200 books contain misprints, and you buy three of them. What is the probability that one of your books will contain a misprint?In women’s tennis, a player must win 2 out of 3 sets to win a match. If a player wins the first 2 sets, she wins the match and the third set is not played. Player V and Player M will compete in a match. Player V and Player M have competed against each other many times. Historical data show that each player is equally likely to win the first set. If Player V wins the first set, the probability that she will win the second set is 0.60. If Player V loses the first set, the probability that she will lose the second set is 0.70. If Player V wins exactly one of the first two sets, the probability that she will win the third set is 0.45. What is the probability that Player V will win a match against Player M?In a shipment of 18 trucks to a local truck dealer, there are four trucks that don't have air conditioning. Assume that you select four trucks at random. What is the probability that two or fewer of the four don't have air conditioning?
- If you have a sample of 100 patients at a hospital and 20 of them have the flu, what is the probability Of randomly selecting 3 patients in a row who have the flue?In a certain computer game, an alien monster roams the screen intending to eat your character. You are armed with a pistol. If you have one out of twelve chance of hitting the monster if you fire randomly, what is the probability that it will take you 15 shot to hit the monster?If a person randomly picks and buys one of the four newsletters in the street each morning. What is the probability that the person will purchase three different newsletters on three consecutive mornings?
- With regards to a particular gene, the percentage of genotypes AA, Aa, and aa in a particular population are respectively, 60%, 30%, and 10%. Furthermore, the percentages of these genotypes that contract a certain disease are respectively. 1%, 5% and 20%. If a person does contract the disease, what is the probability that the person is of genotype AA?A certain airline books 250 passengers for a certain flight that can seat only 212. If past studies show that only 80% of the booked passengers will arrive for the flight. What is the probability that the flight will run out of seats?A drawer contains a large number of batteries - 70% areEnergizer batteries and 30% are Duracell batteries.Suppose that 20% of the Energizer batteries are deadand 40% of the Duracell batteries are dead. If yourandomly select a battery from the door and it is dead,what is the probability it is a Duracell battery
