Stats Solutions

[See Steps] A consumer group wants to estimate the mean electric bill for the month of July for single-family homes in a large city. Based on studies conducted

Question: A consumer group wants to estimate the mean electric bill for the month of July for single-family homes in a large city. Based on studies conducted in other cities, the standard deviation is assumed to be $25. The group wants to estimate the mean bill for July within ± $5 of the true average with 99% confidence.

  1. What sample size is needed?
  2. If 95% confidence is desired, what sample size is necessary?
  3. If you want to be 95% confident of estimating the population mean to within a sampling error of ± 5, and the standard deviation is assumed to be equal to 15, what sample size is required?

Price: $2.99
Solution: The downloadable solution consists of 2 pages
Deliverable: Word Document


∴ Other downloads you may be interested in ∴

log in to your account

Forgot password?
Don't have a membership account?
REGISTER

reset password

Back to
log in

sign up

Back to
log in