Suppose that 18 participants in a hypertension trial are randomly assigned to on
ID: 3232771 • Letter: S
Question
Suppose that 18 participants in a hypertension trial are randomly assigned to one of the three treatments: Standard Treatment, Placebo, or New Treatment. Each participant takes the assigned medication and their systolic blood pressure (mmHg) is recorded after 6 months on the assigned treatment. The data are as follows.
Standard Treatment
Placebo
New Treatment
124
134
114
111
143
117
133
148
121
125
142
124
128
150
122
115
160
128
Which hypothesis test should be used to gauge whether there is a difference in blood pressure by treatment group?
None of these choices represents a suitable answer
Chi-Square test
Comparison of three proportions
ANOVA
Comparison of two propotions
Standard Treatment
Placebo
New Treatment
124
134
114
111
143
117
133
148
121
125
142
124
128
150
122
115
160
128
Explanation / Answer
Since there are three different groups to compare and we need to compaare the average blood pressure to determine whether there is any difference in blood pressure by treatment group, we will use ANOVA here.
Hence,
Option D is correct.
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