Afair coin is flipped four times. find: the probability it will land up heads each time.

The head librarian at the library of congress has asked her assistant for an interval estimate of the mean number of books checked out each day. the assistant provides the following interval estimate: from 740 to 920 books per day. what is an efficient, unbiased point estimate of the number of books checked out each day at the library of congress?

Evaluate cos2θ for cosθ = square root of 3/2

If 3 3/4 lb. of candy costs 20.25 how much would 1lb. of candy cost