z Scores, Type I and II Error, Null Hypothesis Testing

z Scores, Type I and II Error, Null Hypothesis Testing

This is your second IBM SPSS Assignment.

 

It includes three sections. You will:

 

Generate z scores for a variable in grades.sav and report/interpret them.

Analyze cases of Type I and Type II error.

Analyze cases to either reject or not reject a null hypothesis.

The format of this assignment should be narrative with supporting statistical output (table and graphs) integrated (see the Copy/Export Output Instructions in the Resources area for how to do this) into the narrative in the appropriate place (not all at the end of the document).

 

Download the Unit 4 Assignment 1 Answer Template from the Resources area and use the template to complete the following sections:

 

Section 1: z Scores in SPSS.

Section 2: Case Studies of Type I and Type II Error.

Section 3: Case Studies of Null Hypothesis Testing.

Submit your assignment as an attached Word document in the assignment area. All weekly assignments are due by the end of the week on Sunday at 11:59 pm CST.

 

Studies

Readings

Use your Warner text to complete the following:

 

Read Chapter 3, “Statistical Significance Testing,” pages 81–124. This reading addresses the following topics:

The Logic of Null Hypothesis Testing (NHST).

Type I and Type II Error.

The z Test.

Null Hypothesis and Alternative Hypothesis.

Limiting Type I Error.

Effect Size.

Statistical Power.

 

To successfully complete this learning unit, you will be expected to:

 

Calculate z scores in SPSS and interpret them.

Analyze case studies of Type I and Type II error.

Analyze case studies of null hypothesis testing.