## PUB-550 Week 4 Application of the t-Test

PUB-550 Week 4 Application of the t-Test for \$8 Only

The purpose of this assignment is to learn how to apply the t-test to a sample dataset.

For this assignment, students will use IBM SPSS Statistics and the “Example Dataset.”

Using the “Example Dataset” and SPSS, apply the t-test to assess the following statement: “Men and women have different incomes in this city.”

## PUB550 Topic 4 DQ 2

PUB550 Topic 4 DQ 2 for \$8 Only

Step 2 of hypothesis testing involves reviewing the assumptions of the test you selected. Discuss the three assumptions of the t-test. Provide an example of the assumption that is not robust to violations and a situation when the assumption is violated.

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## Compare between t-test and ANOVA One Page

Compare between t-test and ANOVA One Page for \$7 Only

1. Compare between t-test and ANOVA. as short as 140 words including the reference.
2. Analyzing data in quantitative studies as short as 140 words including the reference.

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## HLT540 Topic 6 DQ 2

HLT540 Topic 6 DQ 2 for \$7 Only

Max Points: 5.0

What are the indicators for using a t-test? Create a research scenario in which it would be correct to use a t-test, including the research question, sample size, and dependent and independent variables.

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## HLT540 Week 6 Assignment t-Test for Two Samples

HLT-540 Week 6 Assignment t-Test for Two Samples for \$14 Only
Max Points: 40

Details:

A drug company is measuring levels of oxygenation in patients after receiving a test medication. As the researcher, you are interested in whether Group I, which received the medication, has the same oxygenation levels as Group II, which did not.

Group 1: 2,3,3,4,4,7,8,9
Group 2: 1,2,2,3,4,4,5,5,6,8
Use Excel to run a t-test for two samples, assuming equal variances, with an alpha value of 0.05. Run the t-test and note:

Are you doing a one-tailed test or a two-tailed test (Excel will give you both)?
What is the probability that Group I is different from Group 2, using the p value? Is it significant against the benchmark of p < .05?
While APA format is not required for the body of this assignment, solid academic writing is expected, and documentation of sources should be presented using APA formatting guidelines, which can be found in the APA Style Guide, located in the Student Success Center.

This assignment uses a rubric. Please review the rubric prior to beginning the assignment to become familiar with the expectations for successful completion.

## Exercise 29 t-Test For Independent Groups I

Exercise 29 t-Test For Independent Groups I in \$14 Only

STATISTICAL TECHNIQUE IN REVIEWThe t-test is a parametric analysis technique used to determine significant differences between the scores obtained from two groups. The t-test uses the standard deviation to estimate the standard error of the sampling distribution and examines the differences between the means of the two groups. Since the t-test is considered fairly easy to calculate, researchers often use it in determining differences between two groups. When interpreting the results of t-tests, the larger the calculated t ratio, in absolute value, the greater the difference between the two groups. The significance of a t ratio can be determined by comparison with the critical values in a statistical table for the t distribution using the degrees of freedom (df) for the study. The formula for df for an independent t-test is:

df = number of sobjects in sample 1 + number of subjects in sample 2 – 2