A sample is selected from a population with a mean of μ = 65 and a standard deviation of σ = 15. If the sample has n = 9 scores, what are the expected value of M and the standard error of M?

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?

Complete the statements about the system of linear equation respresented by the tables the equation respented the left table is

Dylan and dusty plan to take weekly surfing lessons together. if the 2-hour lessons are $20 per person and they plan to spend $100 each on new surfboards, what is the maximum number of lessons the two can take if the total amount spent for lessons and surfboards is at most $480?