A Courtyard Hotel by Marriott conducted a survey of its guests. Sixty-two surveys were completed. Based on the data from the survey, found in the file CourtyardSurvey , determine the following probabilities using the relative frequency assessment method.
a. Of two customers selected, what is the probability that both will be on a business trip?
b. What is the probability that a customer will be on a business trip or will experience a hotel problem during a stay at the Courtyard?
c. What is the probability that a customer on business has an in-state area code phone number?
d. Based on the data in the survey, can the Courtyard manager conclude that a customer’s rating regarding staff attentiveness is independent of whether he or she is traveling on business, pleasure, or both? Use the rules of probability to make this determination.