Question: A retailer sells only two styles of stereo consoles, and experience shows that these are in equal demand. Four customers in succession come into the store to order stereos. The retailer is interested in their preferences.
a List the possibilities for preference arrangements among the four customers (that is, list the sample space).
b Assign probabilities to the sample points. c Let A denote the event that all four customers prefer the same style. Find P(A).