View Full Version : Statistics Help! Thank you!

04-12-2012, 04:58 PM
Suppose that the distribution of heights for a very large population follows a
normal curve with a mean of 65 inches and an SD of 3 inches.
A random sample is taken and it is claimed that the chance that the sample mean
is bigger than 66 inches is 1%.
The sample size must be about: (pick an option and explain)

(a) 9 (b) 37 (c) 49 (d) 60

(e) Cannot be worked out without more information

04-12-2012, 11:33 PM
You tell me the Standard Deviation of the Sample mean, then we can talk. (Note: This is NOT a request for more information.)