A health club has sent promotional material to a mailing list consisting of local college students, area doctors, and lawyers. The following table shows the record of individuals taking up the club€™s introductory offer in the first 10 days of the promotion.

a. What is the chance that a typical college student will respond to the promotion? A typical doctor? A typical lawyer? With respect to which group is the promotion most effective?
b. How might information, such as shown in the table, be useful to marketing and advertisingmanagers?

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Frequency of Respondents Students Doctors Lawyers Total Responded Did Not Respond Total 24 .18 58 1.00 .16 .13 49 .78 08 05 09