A salesman must commute 1 hour and 48 minutes from his house to the airport, fly to another city and take a bus to his destinati
on. What is the total travel time one way? Distance between 2 airports = 1,980 miles. Average speed of airplane = 550 mph. Travel time by bus after arrival at airport = 30 minutes.
68% of people will lie between one standard deviation from the mean. If the mean is 22, and 1 standard deviation away is 16 or 28, the standard deviation must be six (28-22=6)
