Electricity bills: According to a government energy agency, the mean monthly household electricity bill in the United States in 2011 was $110.42. Assume theamounts are normally distributed with standard deviation $22.00. Use Excel to answer the following. Round the answer to four decimal places.Part: 0/3Part 1 of 3(a) What proportion of bills are greater than $125?The proportion of bills that are greater than $128 isEXI

Mean Standard deviation The amount is normally distributed.

Answered: Electricity bills: According to a…

Advanced Engineering Mathematics

10th Edition

ISBN:9780470458365

Author:Erwin Kreyszig

Publisher:Erwin Kreyszig

Chapter2: Second-order Linear Odes

Section: Chapter Questions

Problem 1RQ

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state whether the parameter of interest is a mean or a proportion: in a survey, high school and college students are asked whether or not they use geolocation services on their smart phones.
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