1. In a restaurant, the proportion of people who order coffee with their dinner is 80%. A simple random sample of 144 pa

[answerhappygod]

1. In a restaurant, the proportion of people who order coffee
with their dinner is 80%. A simple random sample of 144 patrons of
the restaurant is taken.
a. What are the expected value, standard deviation, and shape of
the sampling distribution?
b. What is the probability that the proportion of people who
will order coffee with their meal is within 2% of the
population mean?
c What is the probability that the proportion of people who will
order coffee with their meal is at least 85%??