Question

You want to see if the number of siblings an individual has affects one’s social skills. Propose a research design to study these variables (how to measure them) and what statistical analysis you would use to analyze the data. Be very specific and detailed.

Answer #1

Ans. To study the impact of number of siblings on one's social skills first we need to select population, let us suppose it to be employees of n companies with data collected from either of the siblings (if they are in the same company).

Then we have to choose the variables:

1. Number of siblings

2. Number of Skills(Out of):

a. Speaking

b. Sports

c. Writing

d. Negotiation

e. Art

f. Academics

g. Others.

We can plot the obtained data on a scatter plot and conduct regression analysis to check the dependency.

A teacher wanted to see if social anxiety affects performance on
an oral assignment. To examine this, students completed social
anxiety scales and were classified into “low,” “average,” and
“high” levels of social anxiety. The data presented in the table
below are the oral presentation grades (in percentages) earned by
the 45 students separated by their social anxiety classification.
Conduct the most appropriate statistical analysis to determine
whether grades on the oral assignment differed based on level of
social anxiety....

You want to test to see if day of the week affects people’s
happiness level. For various reasons you choose to use a
Kruskal-Wallis test when analyzing your data. Calculate the
statistic, state the critical value, and then come to a conclusion
about days of the week and happiness. The numbers represent
happiness.
Monday
Wednesday
Friday
45
47
68
39
25
57
76
48
89
65
67
85
54
42
72
79
40
55...

You wish to determine if the height of a person affects how they
are perceived by others. You ask 35 people to look at full length
pictures of several people and give each person an “honesty score”.
In other words how honest do you think this person is on a scale of
1-100? Within the group of pictures is one tall and one short
person you selected for your experiment (the other pictures are
used as distracters to mask your...

I am very interested in studying the effects of a new talk
therapy treatment I developed to work with children with ADHD. I
decide to take a sample of clients and randomly split them into two
groups. In group 1, the clients are given the same old therapy. In
group 2, the clients are given the new therapy.
What type of design am I using? Inferential statistics
State the Ho and Ha for this study
What statistical test (be specific:...

T-tests are used when you want to examine differences but you do
not know everything about the population. There are three types of
t-tests that you may choose to do: one-sample t-test, independent
sample t-test, or dependent sample t-test. You can calculate these
by hand, in SPSS, or in Excel. The instructions below can be used
for SPSS and your textbook offers instructions for using Excel.
Single-sample t-tests
These tests are used when you want to determine the
probability that...

You are the School Resources Officer for a large
metropolitan high school. Recently, a controversy has emerged
regarding arrest rates for youth that attend the school. The issue
is related to the current national controversy called
Disproportionate Minority Contact. Essentially, this controversy
alleges that criminal justice practitioners arrest a higher
proportion of minority individuals.
You have been asked to analyze the arrests you and
your colleagues make at the school. You have a list of all of the
students that...

Quantitative Variable we are interested in comparing: #
of HR’s (Home Run’s)
American
League:
National League:
Sample Size:
28
Sample Size:
22
Sample Mean:
20.14286
Sample Mean:
18.77
Sample Standard
Deviation:
10.44107
Sample Standard
Deviation:
8.257
You are now going to do a two-sample hypothesis test on this
data
Hypothesis: I would expect an American League player to
hit more HR’s (Home Run’s) on average, than a National League
Player?
Introduction: State...

Quantitative Variable we are interested in comparing: #
of HR’s (Home Run’s)
American
League:
National League:
Sample Size:
28
Sample Size:
22
Sample Mean:
20.14286
Sample Mean:
18.77
Sample Standard
Deviation:
10.44107
Sample Standard
Deviation:
8.257
You are now going to do a two-sample hypothesis test on this
data
Hypothesis: I would expect an American League player to
hit more HR’s (Home Run’s) on average, than a National League
Player?
Introduction: State...

As you saw from the lab PowerPoint slides last week, you will be
doing a research study looking at ‘Aggression Priming” for your
first paper. For this week’s discussion, I want you to discuss with
your group what you think this study is about. What is the
hypothesis? What theory does it come from? What do you predict will
happen (do you expect something different than the hypothesis in
the researcher instructions? If so, what and why?)? Do you think...

(Experimental Design) You are a research biologist for the
Georgia Department of Natural Resources (GA-DNR). You have
discovered that the highly piscivorous (i.e., fish-eating) flathead
catfish (Pylodictis olivaris) was illegally introduced in the
Satilla River (in Southeast Georgia). Shortly after the
introduction, GA-DNR biologists observed a substantial decline in
the abundance of the native redbreast sunfish population. You are
concerned that the native redbreast sunfish may be naive to this
exotic predator and, as a result, not possess the necessary...

ADVERTISEMENT

Get Answers For Free

Most questions answered within 1 hours.

ADVERTISEMENT

asked 1 minute ago

asked 4 minutes ago

asked 14 minutes ago

asked 26 minutes ago

asked 29 minutes ago

asked 33 minutes ago

asked 33 minutes ago

asked 39 minutes ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago