• What is the null hypothesis? Why do we want to reject our null hypothesis?
• The first step is the find the mean of our sample and compare it to the "hypothesized" mean of our null hypothesiswhy do we do that?
• We use the results of our first step to calculate a test-statistic. Why is this important and how does it relate to the concept of z-score, which we learned a few weeks ago?
• What is a p-value? What role does it play in the rejection of the null hypothesis?
• What does it mean to reject the null hypothesis? Does that guarantee that the null hypothesis is false?