A Researcher Conducts a Study of Familiarity with Certain Unusual

Essay

A researcher conducts a study of familiarity with certain unusual words and the time it takes a participant to press a button indicating whether the word is singular or plural. All participants are given the same words. They rate their familiarity with these words (after the reaction-time part)on a 7-point scale (high = familiar). Below are the scores for the first three participants. That is, for Person A, average familiarity of the words used was 6 and average reaction time was 1.25 seconds.
M = 3.67 SD = 1.70 M = 2.08 SD = .80 r = .87
a. Give the Z score prediction formula for predicting reaction time from familiarity.
b. Predict the reaction time for a person who rates his or her familiarity as a 5.
c. Explain what you have done to a person who is familiar with correlation but not with regression.