Question

L) I'wo or fewer of 12 people have an adverse renction. b) None of them have an adverse reaction. (4) The A random a) Find y that a restaurant patron will reqest seating in the outdoor patio is 0.40 sample of 7 people call to make reservations b) Find the d the probability that at mosit 2 of thein request outdoor senting probability that at least 5 of them request outdoor seating. telephone appeals for donations she knows from experience that about 30% of the calls result in donations. a) she will get exactly 8 donations b) What is the expected mumber of donations from 11 calls? If she makes 11 calls, what is the probability that: o The ofmotel have noticed that in a long run about 40% of the people who stop to inquire owner about room for the night actually rent a room. a) If 12 12 people stop to Inquire about roomas, ind the probabity that at leaut 8 of them will rent a oom. b) IF 25 from inquires? separate inquiries are made about rooms, what is tbe expected number of rentals ceming Binomial Probability Formula Probability of x successes and (n-x) failures in n independent repested trials is P(x)-, n Cx, pr(1-p)"-x where p įs a probability of a socess in a singletrial 7) A recent report stated that 32% of tenagers of driving age owned acar. Consider a random sample of 7 teenagers. Find the probability that 5 of them do not own a car. (8) It is claimed that 72% of the cars are going faster than 65 miles per hour. A random sample of 10 cars was observed. What is the probability that 8 of them were going faster than 65 miles per hour? (9) It is estimated that 4 out of 5 patients survive a risky heart operation. Of seven patients who recently had such operation, what is the probability that all will survive?

Answer 1