A random sample is important to _____ research because the sample must be representative of the population.
a. experimental c. both a and b
b. survey d. neither a nor b
Question 2
If a sample is random, then every individual in the population has a(n) _____ chance of being selected for the sample, compared to other people in the population..
a. greater
b. smaller
c. equal
d. none of these