A regression model was fit to 40 data cases and the resulting sample slope, 1, was 15.5 with a standard error SER, of 3.4. Assume that the conditions for a simple linear mode including normality, are reasonable for this situation. a) Test the hypothesis that B1-0. b) Construct a 95% confidence interval for B1

Create a real-life situation and create a system and show how it might be modeled algebraically with a system of equations (or inequalities) show all work include a few sentences explaining the situation, your variables of choice and what each represents, and how you would set it up and solve it algebraically. !

The angles in a triangle are represented by 5x, 8x, and 2x+9. what is the value of ? a.10.8 b.11.4 c.9.7 d.7.2

Xy x xy if a and b are positive integers such that a*b=9 and b*a=72 what is the value of a/b