Statistics Solutions

[Solved] The New York Times reported (L.J. Flynn, "Tax Surfing," The New York Times, March 25, 2002, p. C10) that the mean time to download the home page

Question: The New York Times reported (L.J. Flynn, "Tax Surfing," The New York Times, March 25, 2002, p. C10) that the mean time to download the home page for the Internal Revenue Service (IRS), www.irs.gov, was 0.8 second. Suppose that the download time was normally distributed, with a standard deviation of 0.2 second. If you select a random sample of 30 download times,

  1. what is the probability that the sample mean is less than 0.75 second?
  2. what is the probability that the sample mean is between 0.70 and 0.90 second?
  3. the probability is 80% that the sample mean is between what two values, symmetrically distributed around the population mean?
  4. what probability is 90% that the sample mean is less than what value?

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