I got a 33% on an exam and need to get 12 questions re-done.

Ineed to learn how to solve this problem

Suppose that one doll house uses the 1 inch scale, meaning that 1 inch on the doll house corresponds to 1/2 foot for life-sized objects. if the doll house is 108 inches wide, what is the width of the full-sized house that it's modeled after? in inches and feet.

If p(a) = 0.70 and p(b) = 0.20, then a and b are independent events if