uiz 7

The table below gives beverage preferences for random samples of teens and adults.

		Teens	Adults	Total
	Coffee	50	200	250
	Tea	100	150	250
	Soft Drink	200	200	400
	Other	50	50	100
		400	600	1,000

We are asked to test for independence between age (i.e., adult and teen) and drink preferences. Refer to Exhibit 11-8. The expected number of adults who prefer coffee is