Dispite request by flight attendants

Despite requests by flight attendants to turn off cell phones during takeoff, some passengers do not follow directions. After collecting data from hundreds of flights, an airline has developed the following probability distribution for the number of passengers on a flight that do not turn off their cell phones during takeoff: No. of passengers x 0 1 2 3 4 5 Probability .05 .25 .30 .20 15 .05 Note that the standard deviation of the above probability distribution is SD(X) = 1.27. Question 1. What is the expected number of passengers on a flight that do not turn off their cell phones on takeoff? (use 1 decimal place in your answer) Question 2. New safety rules require that, before takeoff is allowed, each passenger who has not turned off their cell phone must be personally told by a flight attendant that they need to turn off their cell phone. Suppose each passenger that has not turned off their cell phone delays takeoff by 1.5 minutes. What is the standard deviation of the number of minutes that takeoff is delayed by passengers who do not turn off their cell phones? (use 3 decimal places in your answer) W VR