A study is being conducted of the faculty salaries for a public university. Of the 1200 tenuretrack faculty, 480 are full professors, 336 are associate professors and the remaining are assistant...

A study is being conducted of the faculty salaries for a public university. Of the 1200 tenuretrack faculty, 480 are full professors, 336 are associate professors and the remaining are assistant professors. A simple random sample of 100 full professors, 50 associate professors and 50 assistant professors will be taken and information about salary will be obtained. (5)
a. What type of sampling method is used to obtain the 200 selected faculty members?
b. Use your calculator (with a seed value of 18) to give the labels for the first 5 full professors to be selected.