Question 2 During the recent water supply disruption in Selangor, water tanks carried by Air Selangor lorries were sent all over the state to distribute water to affected population, but the distribution was a lot less than perfect. In the future, let's assume that in case of further disruption, Air Selangor will use a new method of distribution by utilizing custom-made lorries that use a water dispenser system to discharge a fixed quantity of water for each household's water tank on a daily basis until water supply is restored. Based on statistics from the National Water Services Commission (SPAN), Malaysians consume an average of 201 litres of water per person per day, but due to the shortage only about 150 litres will be given to each household daily. However, the quantity discharged varies to a certain level due to accuracy issues regarding the dispenser system. In rectifying this issue, Air Selangor carries out an investigation to identify the quantity of water obtained by each household in a designated area during a single distribution process carried out by one of these custom-made lorries. These are the data from 29 households (in litres): 153,172, 122,140,158,159,188, 130,137,149,163,186,1 76,150, 135,143,143,152,156,156, 167,178,178,168,142, 142,154,153,153 a) Construct a histogram from the data set. b) What could be concluded from the histogram, and how will it affect the dispenser system? c) In reality, what have been the major causes of such disruption? Construct an lshikawa Cause and Effect Diagram to identify focus areas for improvement efforts in the future