A total of 1487 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 4 times a week.
b. Find the probability that a person randomly selected from the survey visits quick service restaurants at least 3 times a week.

c. Find the probability that a person randomly selected from the survey visits quick service restaurants less than 3 times a week.

d. To be included in the study, a person had to meet two criteria. Within 30 days prior to the study,
€¢ The person must have visited a quick service restaurant at least 4 times or a casual restaurant at least twice.
€¢ The person must have visited quick service restaurants at least as many times as casual restaurants.
On the basis of these criteria, what can you say about the 17.4% of respondents who said they visit quick service restaurants less than once a week?

Transcribed Image Text:

Frequency of Visits to Quick Service Restaurants Frequency of Visits Less than once a week, 17.4% □ Once week, 28.2% ■ Twice a week, 24.6% Three times a week. 1 5.9% Four times a weck 6.5% More than four times a week, 7.4% Figure 16 Exercises 41 and 42