Business Question

Directions:

1. T-test: 2 Independent Samples Assuming Unequal Variances

From the Class Survey Data File, using data from the 2 Independent Samples sheet —

Use the data set labeled with the first letter of your FIRST name.

A Click on the DATA TAB and then select DATA ANAYLSIS

B Select t-test: 2 Samples Assuming Unequal Variances

C Inputs:

Variable 1 Range: 1st Column of Data, including heading

Variable 2 Range: 2d Column of Data, including heading

Hypothesized Mean Difference: 0

click on Labels

Alpha: Provided in the Excel Sheet

Output Range: click on New Worksheet ply

2. T-Test: 2 Dependent Samples (Paired)Test

From the Class Survey Data File, using data from the Paired Data Sample sheet —

Use the data set labeled with the first letter of your LAST name.

A Click on the DATA TAB and then select DATA ANAYLSIS

B Select: t-Test: Paired Two Sample for Means

C Inputs: Same as for above Test (Use the Alpha provided in the dataset.) using the Before and

After columns of data.

3. See Assignment Submission Form

A & C State your Test Decision & Basis for the Decision: This is Step 5 of a hypothesis test and state

what values are you comparing to make your decision. Do not state all the steps of a HT

B & D InterpretationAnalysis of Results: This is Step 6 of a HT application of results to context.

It is suggested you read the Survey Question (from the Survey Question sheet of the

Survey Data File) for the response variable being tested.

Whether you reject or fail to reject, the issue then becomes what is some plausible reason

or explanation or interpretation for the outcome the test produced or what is an inference

that can be made about the population (identify your assumed population)?

Responses should be concise, clear, and organized.

You are not asked to state H0 and H1, but it will help you answer B & D. 2 Independent Samples: there are no facts given because the class body upper-division business

students at a major university in San Diego is the facts; you are analyzing the survey data you

created in Week 1. Knowing that, these are the 4 facets of the null with the bold applying here:

4 Facets of the Null

1 the null is the status quo 3 there are no differences between groups

2 everything arises from chance 4 everything is unrelated

There is nothing in the facts (again you, as a class body, are the facts) to indicate direction.

Thus the two groups/measurements should be equal (not statistically significantly different).

So, we perform a 2-tail test.

Paired Data Samples: this is a BeforeAfter test, with the same sample measured twice. Before

running the test, we do not know whether the intervening event will have the effect of statistically

increasing or decreasing or having no statistical affect at all. Thus, we do a 2-tail test.

We perform a 2-tail test on the Difference Group, using the following pattern —

Before After = Negative Difference

Before After = Positive Difference

Submitting:

1 Before Coping & Pasting the two output tables to the Submission Form set decimals to 3- 4

places, format column widths and make any needed adjustments so the tables are clear, clean,

and readily understandable. (See side 5 7 of the PowerPoint located with the Assignment),

2 You may need to PASTE SPECIAL PICTURE or PASTE SPECIAL BITMAP so copied images paste

cleanly and clearly into the space provided.

3 Do not submit any raw data. You are limited to 1 page (including the tables).

4 By submitting your work under your name, you agree that the work and words are solely and

wholly your work and words.

5 Prior Permission. If submitted tables(s) andor graphs(s) differ from the Excel output called for

in the directions, the assignment score will be zero, unless Student has obtained written, prior

permission from the Instructor, which permission is provided solely at the discretion of the

Instructor.

6 Upload your Submission Form via the appropriate Canvas assignment link.

2 Independent Samples Paired Data Samples (BeforeAfter Test)

H0: 1 = 2 H0: D = 0

H0: 1 2 H0: D 0