_____ Which of the following correctly describes the difference
between paired and independent sample data?
a. Independent samples operate based on a known
σ, whereas paired samples may operate with a sample standard
deviation.
b. Independent samples are used to address the
difference between two separate populations, whereas paired samples
involve a matched analysis.
c. Independent samples incorporate a t
distribution, whereas paired samples may use the z distribution for
approximation.
d. Independent samples always have the same
sample size, whereas paired samples may compare groups with
different sample sizes.