Electricity bills: According to a government energy agency, the mean monthly household electricity bill in the United States in 2011 was $108.22. Assume the amounts are normally distributed with standard deviation $19.00. Use the TI84 Plus calculator to answer the following. (a) What proportion of bills are greater than S 125? (b) What proportion of bills are between $82 and $135? (c) What is the probability that a randomly selected household had a monthly bill less than $111? Round the answers to at least four decimal places. Part 1 of3 The proportion of bills that are greater than $125 is I I. Part20f3 The proportion of bills that are between $82 and $135 iinI. Part3 of3 The probability that a randomly selected household had a monthly bill less than 5111 is