Application of normal distribution Label the graph properly and shade the unknown region. Indicate your conclusion and write you final answer in PERCENTAGE1. The length of time needed to service a motorcy cle at ETS Service Station is normallydistributed with mean of 6.8 minutes and standard deviation of 1.2 minutes. What is theprobability that a randomly selected motorcycle will require more than 7.2 minutes ofser vice or under 5.6 minutes of service?2. Monthly food expernditures for families in Caloocan City average P4,500 with a standarddeviation of P750. Assuming that the monthly food expenditures are normally distributed.What percentages of these expenditures are between P3,900 and P5,850?3. Oranges chosen at random have a mean mass of 210 grams and standard deviation of 35grams. Assuming a normal distribution, what is the probability of choosing an orange witha mass between 170 grams and 250 grams?