Assignment 2: Tests of Significance
Throughout this assignment you will review mock studies. You will needs to follow the
directions outlined in the section using SPSS and decide whether there is significance between
the variables. You will need to list the five steps of hypothesis testing (as covered in the lesson
for Week 6) to see how every question should be formatted. You will complete all of the
problems. Be sure to cut and past the appropriate test result boxes from SPSS under each
problem and explain what you will do with your research hypotheses. All calculations should
be coming from your SPSS. You will need to submit the SPSS output file to get credit for this
assignment. This file will save as a .spv file and will need to be in a single file. In other words,
you are not allowed to submit more than one output file for this assignment.
The five steps of hypothesis testing when using SPSS are as follows:
1. State your research hypothesis (H1) and null hypothesis (H0).
2. Identify your confidence interval (.05 or .01)
3. Conduct your analysis using SPSS.
4. Look for the valid score for comparison. This score is usually under ‘Sig 2-tail’ or ‘Sig. 2’.
We will call this “p”.
5. Compare the two and apply the following rule:
a. If “p” is < or = confidence interval, than you reject the null.
Be sure to explain to the reader what this means in regards to your study. (Ex: will you
recommend counseling services?)
* Be sure that your answers are clearly distinguishable. Perhaps you bold your font or use a
different color.
This assignment is due no later than Sunday of Week 6 by 11:55 pm ET. Save the file in the
following format: [your last name_SOCI332_A2]. The file must be a word file.
, t Tests
t Test for a Single Sample (20 points)
Open SPSS
Enter the number of activities of daily living performed by the depressed clients studied in #1 in
the Data View window.
In the Variable View window, change the variable name to “ADL” and set the decimals to zero.
Click Analyze Compare Means One-Sample T test the arrow to move “ADL” to the
Variable(s) window.
Enter the population mean (17) in the “Test Value” box.
Click OK.
1. Researches are interested in whether depressed people undergoing group therapy will
perform a different number of activities of daily living after group therapy. The
researchers have randomly selected 12 depressed clients to undergo a 6-week group
therapy program.
Use the five steps of hypothesis testing to determine whether the average number of
activities of daily living (shown below) obtained after therapy is significantly different
from a mean number of activities of 17 that is typical for depressed people. (Clearly
indicate each step).
Test the difference at the .05 level of significance and at the .01 level (in SPSS this means
you change the “confidence level” from 95% to 99%).
As part of Step 5, indicate whether the behavioral scientists should recommend group
therapy for all depressed people based on evaluation of the null hypothesis at both
levels of significance.
CLIENT AFTER THERAPY
A 18
B 14
C 11
D 25
E 24
F 17
G 14
H 10
I 23
J 11
K 22
L 19
Throughout this assignment you will review mock studies. You will needs to follow the
directions outlined in the section using SPSS and decide whether there is significance between
the variables. You will need to list the five steps of hypothesis testing (as covered in the lesson
for Week 6) to see how every question should be formatted. You will complete all of the
problems. Be sure to cut and past the appropriate test result boxes from SPSS under each
problem and explain what you will do with your research hypotheses. All calculations should
be coming from your SPSS. You will need to submit the SPSS output file to get credit for this
assignment. This file will save as a .spv file and will need to be in a single file. In other words,
you are not allowed to submit more than one output file for this assignment.
The five steps of hypothesis testing when using SPSS are as follows:
1. State your research hypothesis (H1) and null hypothesis (H0).
2. Identify your confidence interval (.05 or .01)
3. Conduct your analysis using SPSS.
4. Look for the valid score for comparison. This score is usually under ‘Sig 2-tail’ or ‘Sig. 2’.
We will call this “p”.
5. Compare the two and apply the following rule:
a. If “p” is < or = confidence interval, than you reject the null.
Be sure to explain to the reader what this means in regards to your study. (Ex: will you
recommend counseling services?)
* Be sure that your answers are clearly distinguishable. Perhaps you bold your font or use a
different color.
This assignment is due no later than Sunday of Week 6 by 11:55 pm ET. Save the file in the
following format: [your last name_SOCI332_A2]. The file must be a word file.
, t Tests
t Test for a Single Sample (20 points)
Open SPSS
Enter the number of activities of daily living performed by the depressed clients studied in #1 in
the Data View window.
In the Variable View window, change the variable name to “ADL” and set the decimals to zero.
Click Analyze Compare Means One-Sample T test the arrow to move “ADL” to the
Variable(s) window.
Enter the population mean (17) in the “Test Value” box.
Click OK.
1. Researches are interested in whether depressed people undergoing group therapy will
perform a different number of activities of daily living after group therapy. The
researchers have randomly selected 12 depressed clients to undergo a 6-week group
therapy program.
Use the five steps of hypothesis testing to determine whether the average number of
activities of daily living (shown below) obtained after therapy is significantly different
from a mean number of activities of 17 that is typical for depressed people. (Clearly
indicate each step).
Test the difference at the .05 level of significance and at the .01 level (in SPSS this means
you change the “confidence level” from 95% to 99%).
As part of Step 5, indicate whether the behavioral scientists should recommend group
therapy for all depressed people based on evaluation of the null hypothesis at both
levels of significance.
CLIENT AFTER THERAPY
A 18
B 14
C 11
D 25
E 24
F 17
G 14
H 10
I 23
J 11
K 22
L 19
