In a market study for Zellers, a researcher found that 76% of customers are repeat customers. If

Question:

In a market study for Zellers, a researcher found that 76% of customers are repeat customers. If 12 customers are selected at random, find the probability that at least 11 of them are repeat customers. Suppose at least 11 of the 12 are repeat customers; does it appear that the 76% value found in the study is too low? Why or why not?