_____ is credited with developing the theory of classical conditioning

Suppose your research population was located in small groups in numerous remote locations. You could identify all groups and then randomly select which groups you would investigate. This technique describes

a. stratified random sampling. b. quota sampling. c. cluster sampling. d. convenience sampling.

The eye muscles have a ratio of about ____ axon(s) per ____ muscle fiber(s)

a. two; three b. one; three c. three; two d. three; one