Answer Happy

5. The scholarship committee is considering 25 applicants for 3 awards (1 award- $3,500, 20 award - $3,000, 3-4 award - $2,000). How many different ways are possible to award these scholarships? 6. The probability that a person in the U.S. has type A+ blood is 32,5%. Five unrelated people in the U.S. are selected at random. Find the probability that: a) all five have type A+. b) none of the five has type A+. c) at least one of the five has type A+. 7. The access code for a garage door consists of 5 digits. The first digit cannot be 0. Find the probability that you guess the code from the first try?
8. A card is selected at random from a standard deck of cards. Find each probability: a) Randomly selected card is a black suit or a king. b) Randomly selected card is a four or a face card. c) Randomly selected card is a 7 or a king. 9. Psychology major 150 Males Non-Psychology major 9,750 Females 375 11,300 A student is selected at random. Find the following probabilities: a) the student is a female or a psychology major b) the student is a male and psychology major c) Given that the student is a female, what is the probability that she is a psychology major? d) If we select 3 students at random (without replacement), what is the probability that all 3 students are women and majoring in psychology?