Question
In: Statistics and Probability
A scientist conducts an experiment comparing 4 treatment conditions with a separate sample of n =...
A scientist conducts an experiment comparing 4 treatment conditions with a separate sample of n = 6 in each treatment condition. An ANOVA is used to evaluate the data, and the results of the ANOVA are presented in the following table. Complete all missing values in the table. Hint: It is usually helpful to start with the df column. (2 pts). Be sure to label all notations. (2 pts)
|
SS |
df |
MS |
||
|
Between |
F = |
|||
|
Within |
2 |
|||
|
Total |
58 |
a. Using the F-distribution table, what is the corresponding critical F-value (α = .05)? Write up your F (dfs) (1 pt)
Please show all work, and make sure to answer part a as well.
Solutions
Expert Solution
Here k=4 and N=4*6=24
| SS | df | MS | F | |
| Between | 58-40 =18 | k-1 = 3 | 18/3 = 6 | 6/2 = 3 |
| Within | 20*2 = 40 | N-k = 20 | 2 | |
| Total | 58 | 23 |
F (dfs) = (3,20)
Critical value = 3.10
orchestra answered 1 year agoRelated Solutions
The following data represent the results from an independent-measures experiment comparing three treatment conditions with n=4n=4...
The following data represent the results from an
independent-measures experiment comparing three treatment
conditions with n=4n=4 in each sample. Conduct an analysis of
variance with α=0.05α=0.05 to determine whether these data are
sufficient to conclude that there are significant differences
between the treatments.
Treatment A
Treatment B
Treatment C
7
4
6
7
6
5
3
6
8
3
8
9
F-ratio =
p-value =
Conclusion:
These data do not provide evidence of a difference between the
treatments
There is...
A researcher conducts a repeated-measures t-test to evaluate a treatment with a sample of n =...
A researcher conducts a repeated-measures t-test to evaluate a
treatment with a sample of n = 16 participants and obtains a t
statistic of t = 2.94. The treatment is expected to change scores
on a task. Which of the following is the correct decision for a
hypothesis test using α = .05.
Fail to reject the null hypothesis with either a one-tailed or a
two-tailed test.
Reject the null hypothesis with a one-tailed test but fail to
reject with...
The data below are from an independent-measures experiment comparing three different treatment conditions on number of...
The data below are from an independent-measures experiment
comparing three different treatment conditions on number of panic
attacks. (10 POINTS)
CBT
Psychotherapy
Placebo
1
2
4
1
3
2
G = 42
2
1
4
SX2 = 122
3
3
3
1
2
4
1
1
4
T = 9
T = 12
T = 21
SS = 3.5
SS = 4
SS = 3.5
1) State the null hypothesis
2) calculate necessary statistics using an alpha of .05
3)...
The following data represent the results from an independent-measures experiment comparing three treatment conditions. Conduct an...
The following data represent the results from an
independent-measures experiment comparing three treatment
conditions. Conduct an analysis of variance with α=0.05α=0.05 to
determine whether these data are sufficient to conclude that there
are significant differences between the treatments.
Treatment A
Treatment B
Treatment C
5
4
13
5
5
7
5
9
10
6
6
11
4
6
9
F-ratio =
p-value =
Conclusion:
These data do not provide evidence of a difference between the
treatments
There is a significant...
The following data represent the results from an independent-measures experiment comparing three treatment conditions. Conduct an...
The following data represent the results from an
independent-measures experiment comparing three treatment
conditions. Conduct an analysis of variance with α=0.05α=0.05 to
determine whether these data are sufficient to conclude that there
are significant differences between the treatments.
Treatment A
Treatment B
Treatment C
22
24
26
20
21
24
21
23
27
22
22
28
20
20
25
F-ratio = _______________
p-value = ______________
Conclusion:
___These data do not provide evidence of a difference between
the treatments
___There is...
Question 1 For an experiment comparing more than two treatment conditions you should use analysis of...
Question 1
For an experiment comparing more than two treatment conditions
you should use analysis of variance rather than separate t tests
because ________.
Group of answer choices
a test based on variances is more sensitive than a test based on
means
separate t tests would require substantially more
computations
conducting several t tests would inflate the risk of a Type I
error
There is no difference between the two tests, you can use either
one.
Question 2
A restaurant...
The following data represent the results of an independent-measures experiment comparing three treatment conditions. Use analysis...
The following data represent the results of an
independent-measures experiment comparing three treatment
conditions. Use analysis of variance with = .05 to
determine whether these data are sufficient to conclude that there
are significant differences between the
treatments. (Hint: start by filling in the missing
values on the table below). Please show all formulas with symbols
(and plugin numbers), steps, processes, and calculations for all
steps and all parts of all answers.
Treatment 1
Treatment 2
Treatment 3
4
7
6
6...
The following data represent the results from an independent-measures experiment comparing three treatment conditions. Use StatCrunch...
The following data represent the results from an
independent-measures experiment comparing three treatment
conditions. Use StatCrunch to conduct an analysis of variance with
α=0.05α=0.05 to determine whether these data are sufficient to
conclude that there are significant differences between the
treatments.
Treatment A
Treatment B
Treatment C
8
10
12
8
7
13
8
11
11
7
8
15
9
9
14
F-ratio =
p-value =
Conclusion: Which of these two is correct?
A. There is a significant difference between...
A researcher uses an ANOVA to compare nine treatment conditions with a sample size of n...
A researcher uses an ANOVA to compare nine treatment conditions
with a sample size of n = 13 in each treatment. For this
analysis find the degrees of freedom.
What is df(treatment)?
This is sometimes referred to as the “numerator degrees of
freedom.”
What is df(error)?
This is sometimes referred to as the “denominator degrees of
freedom.”
If the scenario was changed so that there were still nine
treatments, but there were different sample sizes for each
treatment (a.k.a. an...
The following summary table presents the results from an ANOVA comparing four treatment conditions with n=10 participants in each condition.
The following summary table presents the results from an ANOVA comparing four treatment conditions with n=10 participants in each condition. Complete all the values. (3pts)
Source
SS
Df
MS
F
Between treatments
?
?
10
?
Within treatments
?
?
?
Total
174
?
ADVERTISEMENT
ADVERTISEMENT
Latest Questions
- Toady and Froggy were running a vegan cafe together. The business was having financial difficulties.Betelguese, who...
- 1. The following questions concern Jesse Gelsinger who suffered from partial OTC. a. In the...
- Pittman Company is a small but growing manufacturer of telecommunications equipment. The company has no sales...
- TzeMay was one of the first women engineering students at ABC University. She graduated in 1995...
- Use the following information to calculate these various solvency measures: a) NWC, B) WCR, c) Current...
- The files SpeedControl.java and SpeedControlPanel.java contain a program (and its associated panel) with a circle that...
- Calculate the ideal age of a spouse. Enter either m or f from the keyboard in...
ADVERTISEMENT