History, 25.04.2020 07:43 raniacakes

A marketing research firm wants to determine the most effective method of promoting a new book: print,
radio, television, or online. They recruit 460 volunteers to participate in the study. The researcher segments
the volunteers by level of income. Of the 460 volunteers, 140 earn below $20,000, 140 earn between S
20,000 and 40,000, 60 earn between $40,000 and $60,000 and 120 earn over $60,000 The volunteers
from each group are randomly assigned to either the print advertising group, the radio group, the
television group, or the online group. Each group is exposed to the advertising. After 3 hours a recall exam
is given with the proportion of correct answers recorded. Complete parts (a) through (1) below.
a) What type of experimental design isthis?
Completely randomized design, Randomized block design, Matched-pairs design, or Case-control study
b) What is the response variable in thisexperiment?
The income level of the subjects, The type of advertising, The time before the recall exam, or The score on
the recall exam
c) What is the explanatory variable that is manipulated and set at various levels?
The score on the recall exam, The type of advertising. The income level of the subjects, or The time before
the recall exam
d) How many levels of treatment are there?(Type a whole number)
e) What variable serves as the block?
The type of advertising, The time before the recall exam. The income level of the subjects, or The scores on
the recall exam
f) Draw a diagram to illustrate the design.

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