Suppose the population standard deviation is σ = 5, an SRS of n = 100 is obtained, and the confidence level is chosen to be 98%. The margin of error for estimating a mean µ is given by.

What is the perimeter of a rectangular building that is 80 feet wide and 140 feet deep?

Seymour is twice as old as cassandra. if 16 is added to cassandra’s age and 16 is subtracted from seymour’s age, their ages become equal. what are their present ages? show !

Amira is painting a rectangular banner 2 1/4 yards wide. the banner will have a blue background. amira has enough paint to cover 1 1/2 square yards of the wall. the school colors are blue and yellow, so amira wants to add yellow rectangles on the left and right sides of the blue rectangle. the yellow rectangles will each be 3/4 yards wide and the same height as the blue rectangle. what will be the total area of the two yellow rectangles?