Suppose Y is the continuous random variable of the proportion of cavity magnetrons inside microwave ovens that are incorrectly installed. Then f(y) = { 2y, when 0<=y<=1 0 else Find F9Y) the cumulative distribution funtion. Find the probability that in a large sample of microwave ovens between 20% and 70% of the ovens would have cavity magnetrons incorrectly installed. Give the answer to 2 decimal places