Test 2

Psychological Statistics 502

May 17, 2001

 

Part 1:  Data Analysis

Read the following example of an experiment.  Please answer the questions following the example, calculate the appropriate inferential and descriptive statistics and make a conclusion regarding the results of the experiment.

 

Experiment Description

It was hypothesized that people who are instructed to write an essay describing Korea today will have a stronger present temporal focus than those who are asked to describe Korea.  The data are below.

Korea Today

Korea

1.00

5.00

3.00

2.00

4.00

5.00

4.00

4.00

3.00

2.00

3.00

4.00

4.00

4.00

4.00

3.00

4.00

2.00

3.00

4.00

 

A.       What is the Null Hypothesis?

 

B.       What is the Alternate Hypothesis?

 

C.      What is the proper inferential statistic to test these hypotheses?

 

t-test (between groups or related measures)

 

D.      Calculate the statistic:

 

E.       In words, describe the decision you make about the hypotheses.

 

F.       What is the probability of a Type 1 error?

 

Part 2  Analysis Interpretation

Please read the description of the study below.  Use the SPSS statistical output provided to answer the questions. 

 

Example 2