According to a census taken for the United States, p = 64% of all U.S. citizens have a high school degree by the time they reach 18. a) What is the minimum number of people who would need to be surveyed for the sampling distribution of sample proportions of people with a high school degree when they are 18 to be approximately normal? (hint: solve for n in n * (p) * (1-p) > 10) n= (to the nearest whole number) b) What is the mean and standard deviation of sample proportions in this distribution of sample proportions if n = 100? c) If you survey 100 people who are 18 and ask if they have a high school degree, what is the probability 76% of them or more say yes? P(p > 0.76) = d) If you survey 100 people who are 18 and ask if they have a high school degree, what is the probability 60% to 68% of them have a high school degree? P(0.60