![Mathematics](/tpl/images/cats/mat.png)
Mathematics, 12.10.2020 01:01, maddy6882
Electricity bills: According to a government energy agency, the mean monthly household electricity bill in the United States in 2011 was $109.55. Assume the amounts are normally distributed with standard deviation $21.00. Use the TI-84 Plus calculator to answer the following. (a) What proportion of bills are greater than $135? (b) What proportion of bills are between $84 and $143? (c) What is the probability that a randomly selected household had a monthly bill less than $119? Round the answers to at least four decimal places.
![answer](/tpl/images/cats/otvet.png)
Answers: 3
Other questions on the subject: Mathematics
![image](/tpl/images/cats/mat.png)
![image](/tpl/images/cats/mat.png)
![image](/tpl/images/cats/mat.png)
Mathematics, 22.06.2019 00:10, Anaaguayo7406
Change negative exponents to positive, then solve
Answers: 1
![image](/tpl/images/cats/mat.png)
Mathematics, 22.06.2019 03:30, baby092000
Pleas ! its urgent! what is the value of x? enter your answer in the box. mm
Answers: 3
Do you know the correct answer?
Electricity bills: According to a government energy agency, the mean monthly household electricity b...
Questions in other subjects:
![Konu](/tpl/images/cats/mat.png)
Mathematics, 10.12.2020 01:00
![Konu](/tpl/images/cats/fizika.png)
Physics, 10.12.2020 01:00
![Konu](/tpl/images/cats/informatica.png)
Computers and Technology, 10.12.2020 01:00
![Konu](/tpl/images/cats/en.png)
English, 10.12.2020 01:00
![Konu](/tpl/images/cats/mat.png)
Mathematics, 10.12.2020 01:00
![Konu](/tpl/images/cats/istoriya.png)
History, 10.12.2020 01:00
![Konu](/tpl/images/cats/istoriya.png)
History, 10.12.2020 01:00
![Konu](/tpl/images/cats/mat.png)
![Konu](/tpl/images/cats/en.png)
![Konu](/tpl/images/cats/mat.png)
Mathematics, 10.12.2020 01:00