How is hypothesis testing performed using t-tests?
What are the options for determining whether a hypothesis test result is significant?
What are critical regions for t-tests?
How is SPSS used to perform an independent samples t-test?
How are SPSS t-test results evaluated?
How do you find the p-value in SPSS, and how do you use this value to determine test result significance?
What are effect size and statistical power?
This posting explains various characteristics of the t-test, statistical power and how to incorporate these concepts in SPSS.