Question

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 *H*_{0}.

(Hint: Make sure to write down the null and alternative hypotheses
to help solve the problem.)

test statistic = ; Decision: ---Select---
Reject H0 Fail to reject H0

**b)** If appropriate, compute the CI. If not
appropriate, input "na" for both spaces below.

[ , ]

**c)** Compute the corresponding effect size(s) and
indicate magnitude(s).

If not appropriate, input and/or select "na" below.

*r*^{2} = ; ---Select--- na
trivial effect small effect medium effect large effect

**d)** Make an interpretation based on the
results.

Children that did not drink soda were significantly less hyperactive than those that did.Drinking soda significantly decreases the hyperactivity of children. Drinking soda does not have a significant effect on the hyperactivity of children.

Answer #1

A health psychologist hypothesizes that snacking is related to
television (tv) viewing. Below are the hours of television and
number of snacks for a sample of participants. What can the
psychologist conclude with an α of 0.01?
tv
snacks
4
3
3
3
1
5
4
3
7
4
3
0
1
10
8
5
a) What is the appropriate statistic?
---Select--- na Correlation Slope Chi-Square
Compute the statistic selected in a):
b) Obtain/compute the appropriate values to make a...

A social psychologist hypothesizes that depression is related to
Facebook use. The psychologist collects hours on Facebook and
depression score data from a sample of clinically depressed
patients. What can be concluded with α = 0.10?
Facebook
depression
3
3
2
5
4
3
4
2
3
4
0
7
9
6
1
11
2
5
a) What is the appropriate statistic?
---Select--- na, Correlation, Slope, Chi-Square
Compute the statistic selected in
a):
b) Obtain/compute the appropriate values to make...

An educational psychologist hypothesizes that mnemonics can be
detrimental to memory. To test this the psychologist designs a
study where participants are randomly assigned to a mnemonic method
or not. However, before the participants are assigned they are
paired for vocabulary knowledge. All the participants are then
asked to read a passage from a book. A few days later, the
participants are asked to reproduce the passage. Below are the
number of correctly recalled words when reproducing the passage.
What...

A social psychologist hypothesizes that more Facebook use is
related to less depression. The psychologist collects hours on
Facebook and depression score data from a sample of clinically
depressed patients. What can be concluded with an α of
0.01?
Facebook
depression
3
4
5
4
3
4
2
3
0
7
9
6
1
4
2
5
a) What is the appropriate statistic?
---Select--- na Correlation Slope Chi-Square
Compute the statistic selected in a):
b) Obtain/compute the appropriate values to...

A health psychologist hypothesizes that people snack more when
watching more television (tv). Below are the hours of television
and number of snacks for a sample of participants. What can the
psychologist conclude with an α of 0.05?
tv
snacks
3
3
4
5
1
3
3
7
4
3
1
10
8
5
a) What is the appropriate statistic?
---Select--- na Correlation Slope Chi-Square
Compute the statistic selected in
a):
b) Obtain/compute the appropriate values to make a
decision...

Application Exercise:
A physician hypothesizes that males have higher systolic blood
pressure than females. The physician obtains a sample of patients
and measures their blood pressures during their regular check-up.
Below is the systolic blood pressure for the sample. What can the
physician conclude with α = 0.01?
male
female
106
119
98
105
100
132
109
113
98
105
137
115
119
115
127
122
131
124
111
136
a) What is the appropriate test statistic?
---Select--- na z-test...

A social psychologist hypothesizes that more Facebook use is
related to less depression. The psychologist collects hours on
Facebook and depression score data from a sample of clinically
depressed patients. What can be concluded with an α of
0.01?
Facebook
depression
3
4
5
4
3
4
2
3
0
7
9
6
1
4
2
5
a)Compute the correlation statistic
b) Obtain/compute the appropriate values to make a
decision about H0.
(Hint: Make sure to write down the null...

A social psychologist hypothesizes that individuals that are on
the internet less have more social interactions. To investigate
this, the psychologist asks a sample of students how how many hours
they spend on the internet and how many social interactions they
have per week. The following table list the data. What can the
psychologist conclude with an α of 0.10?
social interaction
internet use
4
6
7
5
5
7
3
5
10
3
9
7
5
8
5
4...

A doctor hypothesizes that females have higher systolic blood
pressure than males. The doctor obtains the blood pressure from a
sample of patients during their annual check-up. Below is the
systolic blood pressure for the sample. What can be concluded with
α = 0.05?
male
female
106
119
98
105
100
132
109
113
98
105
137
105
119
115
127
122
131
124
111
136
a) What is the appropriate test statistic?
---Select--- na z-test One-Sample t-test Independent-Samples t-test...

A cognitive psychologist working in the area of suggestion asked
a sample of children to solve as many problems as they could in 15
minutes. Half of the children are told that this is a
problem-solving test and the other half are told that this is just
a time-filling task. The psychologist hypothesizes that thinking it
is a time-filling task will reduce problem solving. What can the
psychologist conclude with an α of 0.05? Below is the data for the...

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