Question

For each of the following sets of results, compute the appropriate test statistic, test the indicated alternative hypothesis, and compute the effects size(s) indicating their magnitude: set Hypothesis mu hat μ0 sigma hat n α a) b) c) μ ≠ μ0 μ > μ0 μ < μ0 54.6 71.6 105.4 54.9 68.2 100 4.4 7.6 9 27 24 25 0.1 0.05 0.01 a) Compute the appropriate test statistic(s) to make a decision about H0. test statistic = ; Decision: Compute the corresponding effect size(s) and indicate magnitude(s). d = ; Magnitude: r2 = ; Magnitude: b) Compute the appropriate test statistic(s) to make a decision about H0. test statistic = ; Decision: Compute the corresponding effect size(s) and indicate magnitude(s). d = ; Magnitude: r2 = ; Magnitude: c) Compute the appropriate test statistic(s) to make a decision about H0. test statistic = ; Decision: Compute the corresponding effect size(s) and indicate magnitude(s). d = ; Magnitude: r2 = ; Magnitude:

Answer #1

For each of the following sets of results, compute the
appropriate test statistic, test the indicated alternative
hypothesis, and compute the effects size(s) indicating their
magnitude:
set
Hypothesis
μ0
σ
n
α
a)
μ ≠ μ0
49
50.8
4.4
44
0.20
b)
μ > μ0
43.9
40.8
7.5
48
0.10
c)
μ < μ0
35.7
30
8.6
40
0.15
a)
Compute the appropriate test statistic(s) to make a decision about
H0.
critical value =__________ ; test statistic =
________________
Decision: ***(choose...

For each of the following sets of results, compute the
appropriate test statistic, test the indicated alternative
hypothesis, and compute the effects size(s) indicating their
magnitude:
set
Hypothesis
1
2
D
n
α
a)
μ1 ≠ μ2
93.3
97.4
3.2
21
0.01
b)
μ1 > μ2
69.8
68
8.3
22
0.05
c)
μ1 < μ2
44.9
39.4
6.3
28
0.10
a)
Compute the appropriate test statistic(s) to make a decision about
H0.
critical value = ________ ; test statistic =...

For each of the following sets of results, compute the
appropriate test statistic, test the indicated alternative
hypothesis, and compute the effects size(s) indicating their
magnitude:
set
hypothesis
1
2
D
n
α
a)
μ1 ≠ μ2
32.7
38
4.5
24
0.10
b)
μ1 > μ2
101.3
96
9.6
26
0.01
c)
μ1 < μ2
75.2
75.4
6.8
24
0.05
a)
Compute the appropriate test statistic(s) to make a decision about
H0.
critical value = ; test statistic =
Decision: ---Select--- Reject...

A developmental psychologist hypothesizes that drinking soda
effects the hyperactivity of children. Children in the experimental
condition were given a can of soda during their afternoon break.
Children in the control condition were not given any soda. The
hyperactivity of the children was measured after the break. Below
are partial SPSS results:
a) Compute the appropriate test statistic(s) to
make a decision about H0.
(Hint: Make sure to write down the null and alternative hypotheses
to help solve the problem.)...

The mean height of adult males in the U.S is about 68.2" with a
variance of 16.00". Suppose the mean height of a sample of 30
mentally disabled males was found to be 69.6". Researchers want to
know if the height of mentally disabled males differs from the
population. What can be concluded with α = 0.01?
a) What is the appropriate test statistic?
---Select from the options--- na z-test, one-sample t-test,
independent-samples t-test, related-samples t-test
b)
Population:
---Select from...

A sociologist wants to know about the stress levels in the
nation over the past years. In the late 2000s, the average score on
the Brown's Stress Inventory (BSI) in the nation was 18 with a
variance of 38.44. A current day sample of 31 produces a mean BSI
score of 13.3. What can the sociologist concludes with an α of
0.05?
a) What is the appropriate test statistic?
b) Population: Sample:
c) Compute the appropriate test statistic(s) to...

A sociologist wants to know about the stress levels in the
nation over the past years. In the late 1990s, the average score on
the Brown's Stress Inventory (BSI) in the nation was 18 with a
variance of 51.84. A current day sample of 21 produces a mean BSI
score of 18.5. What can the sociologist concludes with an α of
0.01?
a) What is the appropriate test statistic?
---Select--- na z-test one-sample t-test independent-samples t-test
related-samples t-test
b)
Population:...

Researchers hypothesize that a new oral contraceptive will
produce weight loss. In a study, healthy females were weighed (lb)
at the beginning of a course of the new oral contraceptive. They
were reweighed at 2 months. What can the researchers conclude with
an α of 0.01? The data are below.
initial weight
2-month weight
140
141
137
130
140
158
147
145
148
140
150
119
144
141
144
163
146
145
151
144
a) What is the appropriate test...

A sleep researcher hypothesizes that sleep is related to
feelings of tiredness. Below are partial SPSS
results with α = 0.05 of the analysis for a sample of participants
at a sleep center.
sleep
tired
sleep
Pearson Correlation
Sig. (2-tailed)
N
1
17
0.358
17
tired
Pearson Correlation
Sig. (2-tailed)
N
0.358
17
1
17
a) Compute the appropriate test statistic(s) to
make a decision about H0.
(Hint: Make sure to write down the null and alternative hypotheses
to help...

1. For a particular scenario, we wish to test the
hypothesis H0 : μ = 14.9. For a sample
of size 35, the sample mean X̄ is 12.7. The population
standard deviation σ is known to be 8. Compute the value
of the test statistic zobs. (Express your
answer as a decimal rounded to two decimal places.)
2. For a test of H0
: μ = μ0 vs. H1 :
μ ≠ μ0, assume that the test statistic
follows a...

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