Question

Identify a research question from your professional life or
career specialization (youth development) that can be addressed by
an independent samples t test.

Indicate why a t test would be the appropriate analysis for
this research question.

Describe the variables and their scale of measurement.

Discuss the expected outcome (for example, "The Group 1 mean
score will be significantly greater than the Group 2 mean score
because…")

Answer #1

**Research Question**: Is there any significant
difference between birth weight of male and female?

If the sample size is less than 30, we can address the above research question by an independent sample t test. Since the samples be taken from two normal populations and if we want to test the means of two normal populations, we use independent sample t-test here. If the sample size of any of the sample is greater than 30, we use z-test.

One of the expected outcomes is "the group 1 mean score will be significantly greater than the group 2 mean score because the of the rejection of null hypothesis. We reject the null hypothesis if the calculated test statistic is greater than the t-tabled value.

**Please upvote my answer if you find it helpful. Thanking
you.**

For questions 1 through 3 state the proper t-test (one
sample, paired samples, independent samples) that should be used to
evaluate the research question: (*Just state the test)
1) A developmental psychologist wants to determine if
a recently created computer training program can increase the
working memory ability of high-school students. A sample of 40
students are given the reverse digit span test at the beginning of
the school year and then again after 4 weeks of training. Are there...

Match each of the research designs below to the
appropriate statistical test from the list below.
z Test
Single Sample t-Test
Paired Samples t-Test
Independent Samples t-test
One-way Between-Groups Analysis of
Variance
One-way Within-Subjects Analysis of
Variance
Two-way Analysis of Variance
Correlation
You have two nominal independent variables and one scale
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cholesterol and if this effectiveness is different for men...

Research Scenario 4
An organization has recently restructured and, in the process,
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to implement an intervention to decrease interpersonal conflict
among employees. To help diagnose the issue, he emails a survey to
the 36 department members asking them to rate conflict levels on a
scale from 1 (no conflict)...

A perceptual psychologist speculated that people can identify
letters faster if they are surrounded by other letters in real
words compared to letters in meaningless combinations.
For example, people should recognize the letter c in the
word doctor faster than c in the letter
stringtocdor. He
created a letter identification task where the stimuli were
identical except in one condition the target letter was embedded in
a word and in a second condition the letter was embedded in
scrambled letters. He
created...

A perceptual psychologist speculated that people can identify
letters faster if they are surrounded by other letters in real
words compared to letters in meaningless
combinations. For example, people should recognize
the letter c in the word doctor faster than
c in the letter stringtocdor. He
created a letter identification task where the stimuli were
identical except in one condition the target letter was embedded in
a word and in a second condition the letter was embedded in
scrambled letters. He created 200...

This question has 10
parts. Each of the 10 parts (Part A - Part J) has
a dropdown list of possible answers. Choose the best answer from
the dropdown list for EACH part of the question
below.
A group of psychiatrists want to investigate if there is any
difference in depression levels (measured on a scale from [0=not at
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versus those...

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Question 1
How is a residual calculated in a regression model? i.e. what is
the meaning of a residual?
a)The difference between the actual value, y, and the fitted
value, y-hat
b)The difference between the fitted value, y-hat, and the mean,
y-bar
c)The difference between the actual value, y, and the mean,
y-ba
d)The square of the difference between the fitted value, y-hat,
and the mean, y-bar
Question 2
Larger values of r-squared imply that the observations are more
closely...

PUBH 6033—Week 7 Assignment 1
Comparing two means: When drink drove a student to
statistics
(Rubric included)
Instructions
For this assignment, you review this week’s Learning Resources
and then perform a two-sample independent t test and an ANOVA
related to the dataset that was utilized in the week 2 SPSS
application assignment. Import the data into SPSS; or, if you
correctly saved the data file in Week 2, you may open and use that
saved file to complete this assignment....

In this second portion of the Final Exam, you will critically
evaluate a quantitative research study on a social science topic.
Your instructor will post an announcement with the reference for
the article assigned for the exam. The study will be from a
peer-reviewed journal and published within the last 10 years.
In the body of your critique, describe the statistical
approaches used, the variables included, the hypothesis(es)
proposed, and the interpretation of the results. In your
conclusion, suggest other...

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