Please help. I just need brief explanation. Thank you.

• A community college professor is interested in determining the relationship between the number ofposts students make on Schoology and their respective grades. He planned to correlate the results from asample from all his classes, however, due to time constraints, he decided to sample only from studentswith high grades. As his statistical consultant, state whether or not you support his plans and why.

• You want to see if the number of siblings an individual has affects one's social skills. Propose aresearch design to study these variables (how to measure them) and what statistical analysis you woulduse to analyze the data. Be very specific and detailed.

• Regression/Correlation differs from ANOVA and t-test in what way?