webassign.net/w M Gmail YouTube Maps Living Environment. 6. [-/2 Points] DETAILS PODSTAT6 7.4.043. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER A local television station sells 15-second, 30-second, and 60 second advertising spots. Let x denote the length of a randomly selected commercial appearing on this station, and suppose that the probability distribution of x is given by the table below. X 15 30 60 p(x) 0.2 0.4 0.4 (a) Find the mean length for commercials (in seconds) appearing on this station. sec (b) If a 15-second spot sells for $400, a 30-second spot for $700, and a 60-second spot for $1,000, find the average amount paid (in dollars) for commercials appearing on this station. (Hint: Consider a new variable, y = cost, and then find the probability distribution and mean value of y.) $ Need Help? Read It Watch It Submit Assignment Save Assignment Progress