6.Given below are seven observations collected in a regression study on two variables, x (independent variable) and y (dependent variable). Use Excel's Regression Tool to answer the following questions.

	x	y
	2	12
	3	9
	6	8
	7	7
	8	6
	7	5
	9	2

a.	What is the estimated regression equation?

b.	Perform a t test and determine whether or not x and y are related. Usea= 0.05.
c.	Perform an F test and determine whether or not x and y are related. Usea= 0.05.
d.	Find and interpret the coefficient of determination.