Question

Dr. Addison believes that going through a training program will increase weekly reading. College students read a mean of 2.3 days a week with a variance of 4.00 days. Dr. Addison's sample of 30 students read a mean of 3.2 days a week. What can be concluded with an α of 0.05?

**c)** Obtain/compute the appropriate values to
make a decision about *H*_{0}.

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

critical value = ________ ; test statistic = ___________

Decision: ***(choose one)*** 1. Reject H0 or 2. Fail to reject
H0

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

[ ], [ ]

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

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

*d* = ___________ ; *(choose one)1. na 2. trivial effect
3. small effect 4. medium effect 5. large effect

*r*^{2} = ___________ ; *(choose one)1. na 2.
trivial effect 3. small effect 4. medium effect 5. large effect

**f)** Make an interpretation based on the results.
(choose one)

1. ) Individuals that went through the training program did significantly more reading than college students

2.) .Individuals that went through the training program did significantly less reading than college students.

3.) The training program has no significant effect on weekly reading.

Answer #1

(f)

Option: 1. ) Individuals that went through the training program did significantly more reading than college students.

A social psychologist predicts that college students will be
impaired from a self-efficacy program for professional athletes. A
sample of students is drawn from a university whose students have
an average of 54 for self-efficacy. The sample of students goes
through the program for six weeks and afterwards are given a
self-efficacy questionnaire. What can the psychologist conclude
with an α of 0.01? The self-efficacy scores for the sample after
six weeks are:
50, 61, 80, 46, 94, 66, 76,...

A social psychologist predicts that college students will
benefit from a self-efficacy program for professional athletes. A
sample of students is drawn from a university whose students have
an average of 54 for self-efficacy. The sample of students goes
through the program for six weeks and afterwards are given a
self-efficacy questionnaire. What can the psychologist conclude
with an α of 0.01? The self-efficacy scores for the sample after
six weeks are:
50, 61, 80, 46, 94, 51, 37, 85,...

Administrators want to know the effectiveness of the Orange
Grove Elementary reading program. The average reading comprehension
score is 22 for children of comparative age. The data below are
reading comprehension scores from a sample of children from Orange
Grove Elementary. Scores range from 0 - 40 with higher scores
indicating better reading comprehension. What can be concluded with
α = 0.05?
id
reading
35
36
37
38
39
40
41
42
43
44
45
10
11
12
13
14...

Regents are certain about the ineffectiveness of the Orange
Grove Preschool reading program. The average reading comprehension
score is 25 for children of comparative age. The data below are
reading comprehension scores from a sample of children from Orange
Grove Preschool. Scores range from 0 - 40 with higher scores
indicating better reading comprehension. What can be concluded with
α = 0.01?
id
reading
35
36
37
38
39
40
41
42
43
44
45
10
11
12
13
14...

The Board of Trustees believe that test anxiety is increased by
the time spent in college. After completing their sophomore year, a
random sample of students was selected and given the College Test
Anxiety Questionnaire (CTAQ). After completing their senior year
they were again tested. What can be conclude with α =
0.05?
sophomore
senior
5.9
7.2
7.4
6.8
8.5
6.2
6.1
5.2
2.1
7.5
3.2
6.3
5.5
6.4
4.6
5.2
a) What is the appropriate test statistic?
---Select: na,...

Dr. Yan predicts that a novel antidepressant drug improves
cognition. To examine this, the drug is administered to a random
sample of 28 trained rats. The rats were then placed in a maze and
timed on how long it took them to complete it. The average
completion time was 48 seconds. Normal rats have an average
completion time of 44 seconds with a variance of 100.00 seconds.
What can be concluded with an α of 0.10? )
What is the...

A school psychologist wants to know if a popular new hypnosis
technique impacts depression. The psychologist collects a sample of
14 students and gives them the hypnosis once a week for two months.
Afterwards the students fill out a depression inventory in which
their average score was 43.04. Normal individuals in the population
have a depression inventory average of 49 with a variance of
144.00. What can the psychologist conclude with an α of 0.01?
a) What is the appropriate...

Dr. Chase wants to investigate how cell phone use impacts
reaction time. To test this, Dr. Chase conducted a study where
participants are randomly assigned to one of two conditions while
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times (in milliseconds) were recorded by how quickly they hit the
breaks in response to a dog crossing the middle of the road during
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A political scientist hypothesizes that a political ad will
reduce attitudes about a particular issue. The scientist randomly
asks 31 individuals walking by to see the ad and then take a quiz
on the issue. The general public that knows little to nothing about
the issue, on average, scores 50 on the quiz. The individuals that
saw the ad scored an average of 53.59 with a variance of 25.70.
What can the political scientist conclude with an α of 0.05?...

Generally, the average typing speed is 56 words per minute (wp).
A professor wanted to see where his students stand compared to the
population. He tested 24 of his students and obtained the following
estimates: an average typing speed of 58 with a variance of 361.00.
What can the professor conclude with α = 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
Also state population and sample from choices below
Population:...

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