In a restaurant, the proportion of people who order coffee with their dinner is .9. 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 of ?
b.What is the probability that the proportion of people who will order coffee with their meal is between 0.85 and 0.875?
c.What is the probability that the proportion of people who will order coffee with their meal is at least 0.945?

Question

In a restaurant, the proportion of people who order coffee with their dinner is .9. 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 of  ? 
b.What is the probability that the proportion of people who will order coffee with their meal is between 0.85 and 0.875?
c.What is the probability that the proportion of people who will order coffee with their meal is at least 0.945?

Quizplus · Accepted Answer

The Answer of In a restaurant, the proportion of people who order coffee with their dinner is .9. 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 of  ? 
b.What is the probability that the proportion of people who will order coffee with their meal is between 0.85 and 0.875?
c.What is the probability that the proportion of people who will order coffee with their meal is at least 0.945?

In a Restaurant, the Proportion of People Who Order Coffee