The registrar of X University with a population of N = 4 500 full-time students is asked by the president to conduct a survey to measure satisfaction regarding online learning. The following table contains a breakdown of the 4500 registered full-time students, by gender and class designation. The registrar intends to take a probability sample of n = 250 students and projects the results from the sample to the entire population of full-time students. Discuss in detail how to obtain a probability sample( choose just one of the 4 techniques) from this data if the frame available from the registrar's file is a listing of the names compiled from eight separate alphabetical list based on the gender and class designation in the table.

Class designation Gender Fr So Jr Sr Total Female 820 670 600 590 2680 Male 540 410 400 470 1820 Total