× Didn't find what you were looking for? Ask a question
Top Posters
Since Sunday
New Topic  
browniels browniels
wrote...
Posts: 792
Rep: 0 0
6 years ago
In order to estimate the average electric usage per month, a sample of 196 houses was selected and the electric usage determined.
 a. Assume a population standard deviation of 350 kilowatt-hours. Determine the standard error of the mean.
  b. With a .95 probability, determine the margin of error.
  c. If the sample mean is 2,000 KWH, what is the 95 confidence interval estimate of the population mean?
Read 42 times
2 Replies

Related Topics

Replies
wrote...
6 years ago
a . 25
b. 49
c. 1951 to 2049
browniels Author
wrote...
6 years ago
very helpful
New Topic      
Explore
Post your homework questions and get free online help from our incredible volunteers
  1285 People Browsing
Related Images
  
 395
  
 275
  
 220
Your Opinion
What's your favorite coffee beverage?
Votes: 274