Evan is landscaping his backyard. the yard is shaped like a rectangle and measures 80 feet by 70 feet. he wants to spread topsoil evenly over the entire surface. one load of topsoil will cover 400 square feet, 4 inches deep. how many loads of dirt does evan need in order to cover his entire yard?

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?

Afamily has five members. a mom, a dad, two sisters, & a brother. the family lines up single file. what is the probabillity that the mom is at the front of the line

Amayoral candidate would like to know her residents’ views on a public open space before the mayoral debates. she asks only the people in her office. her co-workers are an example of a census population convenience sample simple random sample