4. A company in San Francisco employs 27 different workers who currently live in Palo Alto. Consider the amount of time it takes these employees to drive to work in the morning. For each individual employee, the drive time is normally distributed with a mean of 64 minutes and a standard deviation of 9 minutes. Driving times are independent from employee to employee. Suppose the company pays employees for their driving time to work. They are only paid when coming to work, not when going back home (i.e., the payment is only for a one-way trip). Employee 1 is paid $1 per minute; Employee 2 is paid $2 per minute; Employee 3 is paid $4 per minute. Overall, the total amount the company pays these three employees for their commute is then M = T1 + 2 T2 + 4 T3, where the T's represent the respective driving times. (c) Continue to assume the time it takes any employee to get to work is independent of any other employee's commute time. Determine the expected value and standard deviation on the amount of money (M) the company pays these three employees to get to work on any given work day