QUESTION 1 The rejection region for an F test: is not affected by the number of
ID: 3353180 • Letter: Q
Question
QUESTION 1
The rejection region for an F test:
is not affected by the number of samples.
can be in an upper tail or a lower tail.
is partially determined by the value of alpha.
is established by an ANOVA table.
2 points
QUESTION 2
Consider the partial ANOVA table shown below:
Source of Variation
DF
SS
MS
F
Between Treatments
64
8
Within Treatments (Error)
2
Total
100
The number of degrees of freedom corresponding to within treatments is
5
4
18
20
2 points
QUESTION 3
The appropriate test for analysis of variance is a(n):
Z test
t test
F test
Any of the above can be used.
2 points
QUESTION 4
Consider the partial ANOVA table shown below. Let a = .01
Source of Variation
DF
SS
MS
F
Between Treatments
3
180
Within Treatments (Error)
Total
19
380
If all the samples have five observations each:
there are 10 possible pairs of sample means.
the only appropriate comparison test is the Tukey-Kramer.
all of the absolute differences will likely exceed their corresponding critical values.
there is no need for a comparison test – the null hypothesis is not rejected.
is not affected by the number of samples.
can be in an upper tail or a lower tail.
is partially determined by the value of alpha.
is established by an ANOVA table.
Explanation / Answer
1)The rejection region for an F test: is partially determined by the value of alpha.
2)
The number of degrees of freedom corresponding to within treatments is =18
3)
The appropriate test for analysis of variance is a(n): F test
4)
as test statiitc is less than critical value
there is no need for a comparison test – the null hypothesis is not rejected.
Source of Variation DF SS MS F Between Treatments 4 64 16 8 Within Treatments (Error) 18 36 2 Total 22 100Related Questions
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