Joan asked 30 randomly selected adult restaurant customers about their choice of beverages. Eighteen 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
We can use proportions to estimate the number of customers who will choose coffee based on the sample of 30 customers.
If 18 out of 30 customers chose coffee, we can estimate that the proportion of coffee drinkers in the entire population of adult customers is:
18/30 = 0.6
To estimate the number of coffee drinkers among 200 customers, we can multiply the proportion by the total number of customers:
0.6 x 200 = 120
Therefore, we estimate that 120 customers will choose coffee to drink. The answer is (C) 120.