the average American consumes 15 pounds of chicken a month with a standard deviation of 7. if a sample of 60 Americans is taken what is the probability that the mean chicken consumption of the sample will be between 12 and 16? show work

supposed that 70 percent of the population think that you are poorer this year than last year draw a random sample of 150 people what is the probability that the sample proportion is greater than 75%? show work