A national caterer determined that87% of the people who sampled their food said that it was delicious. A random sample of 144 people is obtained from a population of 5000. The 144 people are asked to sample thecaterer's food. If p is the sample proportion saying that the food isdelicious, what is the mean of the sampling distribution of p?

I think I've forgotten the steps to figure out the mean, given the above.