Author Question: A researcher plans to utilize a systematic random sampling method from a population of 5000 eligible ... (Read 69 times)

chads108 · **on:** Jul 8, 2018

A researcher plans to utilize a systematic random sampling method from a population of 5000 eligible subjects, using a sample of 200 subjects. Beginning at a randomly selected point on the list of subjects, what is the gap between elements?

a. 25
b. 50
c. 100
d. 200

Question 2

A researcher who wishes to study the effects of a prenatal breastfeeding education program on the length of time African-American inner-city women breastfeed infants learns that 70 of women in the target population are unmarried.

To achieve stratified random sampling in a sample of 50 subjects, the researcher will:
a. conduct the study using unmarried subjects only.
b. randomly assign all subjects to control versus experimental groups.
c. select a random sample of 35 unmarried and 15 married subjects.
d. select 25 subjects who are married and 25 who are not married.