The probability density of the net weight in ounces of a packaged compound is f(x)=2.0 for 19.75
(a) determined the probability that a package weight is less than 20 ounces
(b) suppose that the packaging specifications required that the weight be between 19.9 and 20.1 ounces. what is the probability that a randomly selected package will have a weight within these specifications?
(c) determine the mean and variance