6. Imagine that you wish to examine eastern Kansans' opinions of Kansans who live on the High Plains. To obtain subjects for your study, you post signs on the KU campus asking for "...people who live in the eastern part of Kansas [you include a map showing appropriate counties] to take part in a cultural geography study. You will be paid $10.00 for one hour...\" a) Define the terms probability and nonprobability sample. {2 points) b) Which of the terms in a] would apply in this case?I Explain why. {2 points] c) Discuss any advantages or disadvantages of this approach. {3 points}