A research study was conducted to examine the clinical efficacy of a new antidepressant. Depressed patients were randomly assigned to one of three groups: a placebo group, a group that received a low dose of the drug, and a group that received a moderate dose of the drug. After four weeks of treatment, the patients completed the Beck Depression Inventory. From the following data SST =2275.3 SSW=790.8 1) What would be the null hypothesis in this study? 2) What would be the alternate hypothesis? 3) Construct one-way ANOVA table 4) Is there a significant difference between the groups? 5) Interpret your answer. Question 4 [20 marks] The following data were collected to study the relationship between the sale price, y and the total appraised value, x, of a residential property located in an upscale neighborhood. x 10 7 6 5 15 9 14 21 18 y 2 8 9 2 8 7 10 9 4 1. Draw the scatter plot 2. Calculate the correlation 3. Calculate the regression model 4. Predict Y when X=5 5. Try to solve it by using the Excel and show the steps