A researcher wants to find out if a new math program is superior to the old math program that is used to teach college algebra at a community college. She selects 400 students from the total student body of 4,000 students to participate in this study. The 400 students would be considered the
a. sample.
b. independent group.
c. population.
d. control group.
A
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Your friend works in a lab and is paid for each three blood smears analyzed. Your friend is operating on which schedule of reinforcement?
a. fixed ratio b. variable ratio c. fixed interval d. variable interval e. random interval
Samantha went from sitting to standing to walking and never crawled. Her motor development would be
a. considered still orderly. b. described as an abnormal cephalocaudal development. c. described as an abnormal proximodistal development. d. out of sequence due to excessive training by the parents.
Once you have come up with an idea as a result of reading a variety of psychological
literature, what should be your next step? A) you should feel proud of your accomplishments B) you should collect relevant data about the idea C) you should use wikipedia to find additional information D) you should ask a friend to be a subject in your study
Comparing all means from a four-group design would require the calculation
of a. four t tests b. six t tests c. one t test d. fifteen t tests