mean for this procedur

Question

A survey reports that the probability a person has blue eyes is 0.10. Assume that 4 people are randomly selected at Miramar College and asked if they have blue eyes. Find the mean for this procedure. Round to 1 decimal place.

Answer 1

You have a fixed number of trials and the probability is the same for each trial....This is binomial.  For binomial, the mean is np = 4(1/10) = 0.4