Q. Your task is to interview a representative sample of attendees for the large concert venue where you work. The new season schedule comprises 200 live concerts featuring all types of musicians and musical groups. Since neither the number of attendees nor their descriptive characteristics are known in advance, you decide on non probability sampling. Based on past configurations, you can calculate the number of tickets which will be available for each of the 200 concerts. Thus, collectively, you will know the number of possible attendees for each type of music. From attendance research conducted at concerts held by the Glacier Symphony during the previous two years, you can obtain gender data on attendees by type of music. Explain how would you conduct a reasonably reliable non probability sample?