Question

Describe an imaginary research study where it would be appropriate to use an independent-measures design that could be analyzed using a t hypothesis test. What are the two sets of data to be compared? What are the null & alternative hypotheses?

Answer #1

An independent-measures research study uses two samples, each
with n = 8 participants. If the data produce a t statistic of t =
2.50, then which of the following is the correct decision for a
two-tailed hypothesis test? Group of answer choices Reject the null
hypothesis with a = .05 but fail to reject with a = .01. cannot
answer without additional information Reject the null hypothesis
with either a = .05 or a = .01. Fail to reject the...

An independent-measures research study uses two samples, a total
of 23 participants in both samples combined. If the data produce a
t statistic of t = 2.10, then which of the following is the correct
decision for a two-tailed hypothesis test?
Cannot answer without additional information
Reject the null hypothesis with a = .05 but fail to reject with
a = .01.
Reject the null hypothesis with either a = .05 or a = .01.
Fail to reject the null...

Explain the differences between a research design that utilizes
an independent measures t-test to analyze the data, and a repeated
measures t-test to analyze the data.

1. For each study design below, choose whether it is a one
sample T, an independent T, or a repeated measures T.
a. A gym class at a private school takes a fitness test and
their scores are compared with a fitness test of different students
at a public school.
b. Students taking Research One are tested on their research
knowledge at the start of the term and again at the end of the
term.
c. The average income for...

What is a repeated measures design? Describe an example in which
you would use any type of t-test with a repeated measures
design.

3. Null hypotheses for an independent-measures t
test
Which of the following null hypotheses is appropriate for an
independent-measures t test?
H₀: μ₁ – μ₂ ≠ 0
H₀: μ₁ – μ₂ = 0
H₀: μ ≥ 0
H₀: μ < 4

A repeated-measures design deals with the differences of the
means, while an independent-measures design deals with the mean of
the differences."
True False
A repeated-measures design study comparing two samples uses
_____ groups of participants and obtains ____ score(s) for each
participant.
"1, 1"
"1, 2"
"2, 1"
"2, 2"
A repeated-measures design is better than an
independent-measures design because it requires more subjects.
True False
A repeated-measures t-test is also called a within-subjects,
paired, or dependent t-test. "
True...

I want to design a psychology research study in spss asseing
the impact of an independent variable (regular exercise over 8
weeks) on a dependent variable (depression). impact on depression
measured as change in scores on the widely accepted BDI-II
depression diagnostics test. Measuring points at start and end of
the 8 weeks.
For this my understanding is that the repeated measures t-test
is right.
I want to also compare the results of this group receiving
treatment with a control...

Using the scientific method, design your own simple
psychological research study and describe it. In your description,
please identify:
1. What is your theory? What is your
hypothesis? Make sure your
theory/hypothesis relates to psychology and involves human
participants.
2. What kind of sample will you use? Why? How will you recruit
them?
3. Which research design you’ll be using to test your hypothesis
(experimental or correlational)?
Why did you choose this design?
4. How you will split your participants into...

Consider the following data from a repeated-measures design. You
want to use a repeated-measures t test to test the null hypothesis
H0: µD = 0 (the null hypothesis states that
the mean difference for the general population is zero). The data
consist of five observations, each with two measurements, A and B,
taken before and after a treatment. Assume the population of the
differences in these measurements are normally distributed.
Observation
A
B
1
1
3
2
3
4
3...

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