When each member of a population has an equal chance of being chosen for a study, the individuals selected constitute a(n) ____ sample.
a. random
b. stratified
c. independent
d. significant
Question 2
Which method will result in having a truly random sample of the population of the United States?
a. Randomly select names from every phone book published in the United States.
b. Advertise in every newspaper in the country that you will pay 10/hour to anyone willing to be in a research project.
c. Select names from the Internal Revenue Service of every person who filed income tax returns last year such that every income level is equally represented.
d. Obtain names from the U.S. census bureau and randomly select participants.
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