Question
In: Math
Suppose a hypertension trial is mounted and 18 participants are randomly assigned to one of the...
Suppose a hypertension trial is mounted and 18 participants are randomly assigned to one of the comparison treatments. Each participant takes the assigned medication and their systolic blood pressure (SBP) is recorded after 6 months on the assigned treatment. Is there a difference in mean SBP among the three treatment groups at the 5% significance level? 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 |
What is total variance (or as what it's called in ANOVA, "MStotal")?
A. 13.8
B. 189.6
C. 3222.9
D. 179.1
Solutions
Expert Solution
applying ANOVA:
from above MS total =3222.94/17=189.6
option B is correct
milcah answered 3 months agoRelated Solutions
Suppose a hypertension trial is mounted and 18 participants are randomly assigned to one of the...
Suppose a hypertension trial is mounted and 18 participants are
randomly assigned to one of the comparison treatments. Each
participant takes the assigned medication and their systolic blood
pressure (SBP) is recorded after 6 months on the assigned
treatment. The data are presented in the table below. Compute the
totals for each column (1pt).
Group 1 Standard Treatment : 124 111 133 125 128 115 =
736
Group 2 Placebo: 134 143 148 142 150 160 =
877
Group 3...
Suppose a hypertension trial is mounted and 18 participants are randomly assigned to one of the...
Suppose a hypertension trial is mounted and 18 participants are
randomly assigned to one of the comparison treatments. Each
participant takes the assigned medication and their systolic blood
pressure (SBP) is recorded after 6 months on the assigned
treatment. The data are presented in the table below. Compute the
totals for each column (1pt).
Group 1 Standard Treatment : 124 111 133 125 128 115 =
736
Group 2 Placebo: 134 143 148 142 150 160 =
877
Group 3...
Suppose a hypertension trial is mounted and 18 participants are randomly assigned to one of the...
Suppose a hypertension trial is mounted and 18 participants are
randomly assigned to one of the comparison treatments. Each
participant takes the assigned medication and his or her systolic
blood pressure 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
Is there a difference in mean systolic blood pressure among
treatments? Run...
Suppose a hypertension trial is mounted and 18 participants are randomly assigned to one of the...
Suppose a hypertension
trial is mounted and 18 participants are randomly assigned to one
of the comparison treatments. Each participant takes the assigned
medication and their systolic blood pressure (SBP) is recorded
after 6 months on the assigned treatment. The data are as
follows.
Standard Treatment
Placebo
New Treatment
123
133
113
110
144
118
134
147
121
126
140
123
127
155
124
116
162
130
Is there a difference
in mean SBP among treatments? Run the appropriate test...
A hypertension trial is mounted and 12 participants are randomly assigned to receive either a new...
A hypertension trial is mounted and 12 participants are randomly
assigned to receive either a new treatment or a placebo. Each
participant takes the assigned medication and their systolic blood
pressure (SBP) is recorded after 6 months on the assigned
treatment. The data are as follows.
Placebo
New Treatment
134
114
143
117
148
121
142
124
150
122
160
128
Is there a difference in mean SBP between treatments?
Assume equal variances. Run the test at a 5% level...
A clinical trial is run to compare weight loss programs and participants are randomly assigned to...
A clinical trial is run to compare weight loss programs and
participants are randomly assigned to one of the four comparison
programs and are counseled on the details of the assigned program.
Three popular weight loss programs were considered: the low calorie
diet, the low fat diet, and the low carbohydrate diet . For
comparison purposes, a fourth group is considered as a control
group. Participants in the fourth group are told that they are
participating in a study of...
1. A clinical trial is run to compare weight loss programs and participants are randomly assigned...
1. A clinical trial is run to compare weight loss programs and
participants are randomly assigned to one of the comparison
programs and are counseled on the details of the assigned program.
Participants follow the assigned program for 8 weeks. The outcome
of interest is weight loss, defined as the difference in weight
measured at the start of the study (baseline) and weight measured
at the end of the study (8 weeks), measured in pounds. Three
popular weight loss programs...
In a comparison of two different weight-loss programs, obese participants were randomly assigned to one of...
In a comparison of two different weight-loss programs, obese
participants were randomly assigned to one of two groups: (1) the
soy group, a low-calorie group that ate only soy-based proteins, or
(2) the traditional group, a low-calorie group that received 2/3 of
their protein from animal products and 1/3 from plant products. One
of the dependent measures collected was the amount of body fat loss
as a percentage of initial body weight.
Summary data from each group based on this...
In a comparison of two different weight-loss programs, obese participants were randomly assigned to one of...
In a comparison of two different weight-loss programs, obese
participants were randomly assigned to one of two groups: (1) the
soy group, a low-calorie group that ate only soy-based proteins, or
(2) the traditional group, a low-calorie group that received 2/3 of
their protein from animal products and 1/3 from plant products. One
of the dependent measures collected was the amount of body fat loss
as a percentage of initial body weight.
Summary data from each group based on this...
Forty-eight participants were randomly assigned to do math tasks under one of three conditions: 16 while...
Forty-eight participants were randomly assigned to do math tasks
under one of three conditions: 16 while listening to soft gentle
music, 16 while listening to loud intense music, and 16 while in
silence. The means and estimated population variances for the three
groups were: Soft-gentle: M = 33, S2 =
25; Loud-intense: M = 42, S2 = 36;
Silence M = 42, S2 = 16.
Do these results suggest that there is a difference in performance
on this kind of...
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