1.Each month, the city of Accra generates an average of 28 pounds of waste. Assume the variable is approximately normally distributed and the standard deviation is 2 pounds. If a household is selected at random, find the probability of its generating between 27 and 31 pounds of waste per month. Draw a normal distribution curve to show the required region. 2.It is assumed that consumption C depends on income Y and that this relationship takes the form of the linear function C = a + bY. When Y is GH¢600, C is observed to be GH¢660. When Y is 1,000, C is observed to be GH¢900. What are the values of a and b in this function? Express C in terms of Y only. Find the consumption if a family’s income is GH¢1,200.