Some randomly selected adults who are at least 22 years in age were asked, How frequently do

Some randomly selected adults who are at least 22 years in age were asked, €œHow frequently do you visit quick service restaurants?€ Their responses are described by the pie chart in Fig. 16.

a. Find the probability that a person randomly selected from the survey visits quick service restaurants 3 times a week.
b. Find the probability that a person randomly selected from the survey visits quick service restaurants at most twice a week.
c. Find the probability that a person randomly selected from the survey visits quick service restaurants more than twice a week.
d. On the basis of the pie chart, a student concludes that 6.5% of all teenagers eat at quick service restaurants 4 times a week. What would you tell the student?

Transcribed Image Text:

Frequency of Visits to Quick Service Restaurants Frequency of Visits Less than once week, 17,4% Onces week, 28,2% ■ Twice a week, 24.6% ■ Three times a week, 15.9% Four times a week 6.5% More than four times a week, 7.4% Figure 16 Exercises 41 and 42