Choose all of the correct alternatives. Krystin, of "Krystin's Stereo Emporium" decides to conduct a survey to determine which sales gimmick (free cassette with each purchase, no interest OAC, or 50% off price) is most effective with consumers 18 to 15 years of age and those over 25. She manages somehow to randomly select 30 consumers from each age group and asks them to rate, on a scale of 1-10, the appeal of each of the three offers. She randomizes the order of presentation of each type of offer in such a way that an equal number of consumers within each age group receive each order. If factor A is the repeated measure and shows a main effect and factor B shows no main effect, we may conclude that
a. there was significant within participant variability.
b. there was significant between participant variability.
c. the type of gimmick made a difference in the consumers' appeal ratings.
d. the age of the consumer made a difference in the consumers' appeal ratings.
e. there could not have been an interaction effect.
f. we need more information to determine if there was an interaction effect.
Ans: a,c,f
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