An experimenter studies the effect of type of music during p

An experimenter studies the effect of type of music during practice on recall of word lists using rock background music for 10 subjects, classical music for 16 others, rap music for 12, and country/western for another 15. How many levels are there in the experiment?

a. How many factors does this experiment have?
b. How many levels are there in the experiment?
c. What is the N in this experiment?

Solution

An experimenter studies the effect of type of music during practice on recall of word lists using rock background music for 10 subjects, classical music for 16 others, rap music for 12, and country/western for another 15. How many levels are there in the experiment?

a. How many factors does this experiment have?

There is one factor = type of music

b. How many levels are there in the experiment?

Four levels (rock, classical, rap and country/western)

c. What is the N in this experiment?

N=10+16+12+15=53