be at a maximum temperature of 22 ∘ C. If the temperature rises above this, the air conditioning system should be switched on. c Assuming that the temperature in the hospital is the same as the outside temperature when the air conditioning system is off, find the number of hours over the 24-hour period during which the air conditioner must be switched on. Give your answer in hours, correct to 1dp. d Comment on whether this model would be useful to predict the temperature in the hospital at 1.00am on Wednesday morning. Justify your answer.