One can of waterproofer covers 100 square feet. You want to apply two coats of waterproofer to the wooden crate. How many cans of waterproofer do you need?
4 ft
2.5 ft
6 ft

Summary statistics given for independent simple random samples from two populations. use the pooled t-interval procedure to obtain specified confidence interval. x1=71.6, s1=3.9, n1=11, x2=67.9, s2=3.4, n2=9 determine a 99% confidence level.