Exhibit 11-8
The table below gives beverage preferences for random samples of teens and adults.
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
A)0.25
B)0.33
C)150
D)200

Question

Exhibit 11-8
The table below gives beverage preferences for random samples of teens and adults.
  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
A)0.25 
B)0.33 
C)150 
D)200

Quizplus · Accepted Answer

The expected number of adults who prefer coffee can be calculated by multiplying the probability of an adult preferring coffee (0.30) by the total number of adults (500): 0.30 * 500 = 150. Therefore, the correct answer is C) 150.

Exhibit 11-8 the Table Below Gives Beverage Preferences for Random Samples of Samples