Using a stopwatch, time an elevator in a building. Determine the following:

a. Average time required for the door to close once a car operating station button (i.e., floor button) is pushed

b. Average time required for the door to fully open once the car stops at the floor

c. Average time the door remains open at a floor (from the time it is fully open to the time it begins to close after a button is pushed)

d. The average time it took to go up one story, excluding wait time (start the stopwatch as soon as the elevator starts to move, and stop it as soon as the elevator stops at the floor)

e. The average time it took to go up one story, including wait time

f. The average time it takes to walk up one story by using the stairs