At a local community college, 40% of students who enter the college as freshmen go on to graduate. Ten freshmen are randomly selected. a. What is the probability that none of them graduates from the local community college? (Do not round intermediate calculations. Round your final answer to 4 decimal places.) Probability b. What is the probability that at most nine will graduate from the local community college? (Do not round intermediate calculations. Round your final answer to 4 decimal places.) Probability c. What is the expected number that will graduate? (Round your final answer to 2 decimal places.) Expected number

Fourteen percent of U.S. residents are in their twenties. Consider a group of eight U.S. residents selected at random. Find the probability that the number of people in the group who are in their twenties is - a. Exactly Two b. None С. Four or Five d. One or Two

John runs a computer software store. He counted 120 people who walked by his store in a day,53 of whom came into the store. Of the 53, only 26 bought something in the store. Estimatethe probability that a person who walks into the store will buy something. Round your answerto the nearest hundredth. Group of answer choices 0.66 0.49 0.22 0.44 none of these choices

need help please