he actual tracking weight of a stereo cartridge that is set to track at 3 g on a particular changer can be regarded as a continuous W X with pdf f(') = k[l - (x- 3):] 2Ex54 ' A 0 otherwise Sketch the graph offal b. Find the value of k. e. What is the probability that the actual tracking weight is greater than the prescribed weight? (I. What is the probability that the actual weight is within .25 g of the prescribed weight? e. What is the probability that the actual weight differs from the prescribed weight by more than .5 g