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.
Answers: 3
Mathematics, 21.06.2019 17:30, yurimontoya759
Which of the following is true about the graph of f(x)=7^x. select all that apply. a= it intercepts the x axis b=it intercepts both axis c=it intercepts neither d=it intercepts the y axis
Answers: 1
Mathematics, 21.06.2019 18:30, Alexandragurule18
Can someone check if i did this correct. it’s number 4 if you’re wondering.
Answers: 1
Electricity bills: According to a government energy agency, the mean monthly household electricity b...
English, 03.10.2019 02:00
Mathematics, 03.10.2019 02:00
Mathematics, 03.10.2019 02:00
Arts, 03.10.2019 02:00
Chemistry, 03.10.2019 02:00
Social Studies, 03.10.2019 02:00
History, 03.10.2019 02:00