Answer:
the two groups differed in their attitudes toward advertising, significantly
Step-by-step explanation:
given that until recently a number of professions were prohibited from advertising. In 1977, the U.S. Supreme Court ruled that prohibiting doctors and lawyers from advertising violated their right to free speech. The paper "Should Dentists Advertise?" Journal of Advertising Research, June 1982) compared the attitudes of 101 consumers and 124 dentists to the questions "I favor the use of advertising by dentists to attract new patients".
Hypotheses would be
H-0: the groups do not differ
H-a: The two groups differ significantly
(two tailed chi square test)
Observed
Group Strongly agree Agree Neutral Disagree Strongly disagree Total
Consumers 34 47 9 6 5 101
Dentists 9 18 23 28 46 124
Expected is calculated as row total * column total / grand total for each cell
chi square = (obs - exp)^2/Exp for each cell added
chi square = 79.2716
rxc 5x2
df = 4x1 =4
p value <0.00001
Since p < alpha say 0.01, we reject null hypothesis.
the two groups differed in their attitudes toward advertising, significantly
