ryan_citelli

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

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