week 4 discussion quanatitive

Why do we need hypotheses tests?What is the difference between the null hypothesis and the alternative hypothesis?Why do we need a null hypothesis?What is the difference between statistical significance and practical significance?Why do we need to look at a scatterplot when assessing correlations (see the below figure for ideas)

"Looking for a Similar Assignment? Order now and Get 10% Discount! Use Code "GET10" in your order"