In a large population, 73% of the population are short-sighted. A samples of 7 people is randomly chosen from the population. Find the probability that
3 such samples of 7 people are taken.
(a) Find the probability that there are altogether 10 people who are short-sighted from the 3 samples.
A random sample of n people is chosen instead from the same population
(b) Find the minimum number n such that there is at least 99% chance of having one or more people who are short-sighted.

The length of an intercepted arc of a central angle of a circle is 4 cm. if the radius of the circle is 5 cm what is the measurement of the central angle to the nearest whole degree

Use the distance formula to find the distance between (-3,5) and (3,1)

An oil exploration company currently has two active projects, one in asia and the other in europe. let a be the event that the asian project is successful and b be the event that the european project is successful. suppose that a and b are independent events with p(a) = 0.2 and p(b) = 0.8. (a) if the asian project is not successful, what is the probability that the european project is also not successful? (b) what is the probability that at least one of the two projects will be successful? (c) given that at least one of the two projects is successful, what is the probability that only the asian project is successful? (round your answer to three decimal places.)