I’m having a hard time with these stupid problems someone i need all the steps -5=n+1, -6=x+2, y-9=-2, x-4=-10

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?

The distance between two cities is 368 miles. if the scale on the map is 1/4 inch=23 miles, what is the distance between the cities on the map?

Create a data set with 8 points in it that has a mean of approximately 10 and a standard deviation of approximately 1.