The ages of a group of 138 randomly selected adult females have a standard deviation of 16.1 years. Assume that the ages of female statistics students have less variation than ages of females in the general population,so let sigma equals 16.1 years for the sample size calculation. How many female statistics student ages must be obtained in order to estimate the mean age of all female statistics students? Assume that we want 90% confidence that the sample mean is within one-half year of the population mean. Does it seem reasonable to assume that the ages of female statistics students have less variation than ages of females in the general population? The required sample size is. (Round up to the nearest whole number as needed.) Does it seem reasonable to assume that the ages of female statistics students have less variation than ages of females in the general population?
The ages of a group of 138 randomly selected adult females have a standard deviation of 16.1 years. Assume that the ages of female statistics students have less variation than ages of females in the general population,so let sigma equals 16.1 years for the
The required sample size is. (Round up to the nearest whole number as needed.)
Does it seem reasonable to assume that the ages of female statistics students have less variation than ages of females in the general population?
Trending now
This is a popular solution!
Step by step
Solved in 2 steps with 1 images
