5. joan asked 30 randomly selected adult restaurant customers about their choice of beverages. 18 customers said coffee is their favorite beverage. if the restaurant serves 200 adult customers per day, estimate the number who will choose coffee to drink.
a. 100
b. 110
c. 120
d. 130
6. you are surveying students to find out their opinion of the quality of food served in the school cafeteria. you decide to poll only those students who buy hot lunch on a particular day. is your sample random? explain