If events X and Y are independent, what must be true? Check all that apply.
PCY|X) = 0
PIXIY) = 0
PLY \X) = P(Y)
PLY \X) = P(X)
PIXIY) = P(Y)
PIXY) = P(X)

An investment decreases in value by 30% in the first year and decreases by 40% in the second year. what is the percent decrease in percentage in the investment after two years

Which strategy is used by public health to reduce the incidence of food poisoning?

If each bricks costs and he can only buy one brick how much will it cost him to get the material to put around the outside of his garden?