A leading large college recently reported that 40.5% of its student body had concerns about the increasing price textbooks.  If four students from this college were chosen at random, what is the probability that at least one of these four students chosen would be concerned about the increasing price of textbooks?

An airline has a policy of booking as many as 18 persons on an airplane that can seat only 17. past studies have revealed that only 81% of the booked passengers actually arrive for the flight.  find the probability that if the airline books 18 persons not enough seats will be available.

Alex Insurance Company historically shows that 10% of their insured received at least one traffic ticket last year.  This year, considering no changes, a sample of 200 drivers was chosen.  What is the probability that less than 34 policyholders will receive at least one traffic ticket this year?

Suppose the percentage of those completing a master’s degree is 42%. In a randomsample of 9 master’s degree students, what is the probability that exactly 5 willcomplete their degrees?

Suppose that it is known that 45% of eighteen-year-olds in a particular city do not have a driver's licence. If a random sample of 20 eighteen-year-olds is taken in the city, what is the probability that more than half of them will not have a driver's licence?

67.9% of all patients admitted to the intensive care unit (ICU) have a fever, 35.6% have some sort of infection, and 17.2 % have both problems. find the probability that a randomly chosen patient in this ICU had with a fever , given that they have an infection

2) A CNN/USA Today/Gallup poll in April 2005 reported that 75% of adult Americans were satisfied with the job the nation’s major airlines were doing. Ten adult Americans are selected at random, and the number who are satisfied with the airlines is recorded. What is the probability that at least one adult American was satisfied with the job the nation’s major airlines were doing?

candy industries take random samples from their inventory and sort by flavor. daycare center samples a number of those they take care of and sort by how often they cry during a day visit. If you randomly select a candy from the candy sample and  a child in daycare from the daycare sample, what is the probability that you'd pick a grape taffy and a child who cries more than twenty times a day?

A manufacturing machine has a 5% defect rate. If 10 items are chosen at random, what is the probability that at least one will have a defect?

Suppose that about 55% of the people who are murdered actually knew the murderer. Suppose that a detective file in Boston has 51 current unsolved murders. What is the probability that fewer than 21 victims knew their murderer?