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 TI-84 Plus calculator to answer the following. (a) What proportion of bills are greater than $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. 70°F Clear Part 1 of 3 F1 The proportion of bills that are greater than $125 is 2 Part 2 of 3 The proportion of bills that are between $82 and $135 is @ 2 F2 3 F3 4+ F4 $ 4 F5 % 5 H F6 6 0 F7 & 7 X F8 X * 8 $ F9 Ś COLM F10 ( 9 Submit Assignment Ⓒ2022 McGraw Hill LLC. All Rights Reserved. Terms of Use | Privacy Center | Accessibility F11 --- ) 0 F12 Insert + PrtSc Delete Backspace Home ►/11 Num Lock End 1 4) D Pol V

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