3 questions are in the attached pictures.Please give me a clearly proof with detail.

To prepare for this Assignment: Review the Learning Resources and the media programs related to ttests. For additional support, review the Skill Builder: Research Design and Statistical Design and the Skill Builder: Hypothesis Testing for Independent Samples t-test, which you can find by navigating back to your Blackboard Course Home Page. From there, locate the Skill Builder link in the left navigation pane. Also, review the t test scenarios found in this week’s Learning Resources and consider the three different approaches of t tests: Independent sample t test Paired sample t test One sample t test Based on each of the three research scenarios provided, open the High School Longitudinal Study dataset or the Afrobarometer dataset from this week’s Learning Resources using SPSS software, then choose and run the appropriate t test. Once you perform your t test analyses, review Chapter 11 of the Wagner text to understand how to copy and paste your output into your Word document.