Question

What sample size should be used if we would like to estimate the mean age of the college students at a particular campus with 95% confidence? We would like to be accurate to within three years, and we will assume the population is normally distributed with a standard deviation of 5.1 years. a. 12 b. 23 c. 204 d. 8

Answer 1

The sample size should be:

c. 204

Explanation:

This is based on the assumption that in this campus, there are no more than 2040 students. The sample size should be around 10% of the population, which is considered a good representative of the real population for the specific study. If, however, the population is so large that 10% of the population will be more than 1,000, then the sample size should be limited to 1,000.