A car dealership is interested in whether being Married or Single and the type of car they purchase: Gas Engine, Hybrid, or Electric are Independent Events. If they are independent they will use different marketing strategies for each group: Single or Married.(Hint: watch Lesson XXX parts a and b Panopto)

a. State Their Belief

B Married status & car type are independent

OB Married status & care type are not independent

b. To Test Their Belief, they have observed 1,000 customers who have purchased cars from them. The table below summarizes their observations. Fill in the missing Expected numbers, assuming that they are independent.

Gas Hybrid Electric

Married	500	80	20	600
Single	200	120	80	400
	700	200	100

c. Calculate l² =?