A study in a particular state found that only 5% of the voters have Doctoral degrees. In a random sample of 200 voters, let x be the number who have doctoral degrees.
6) Find the mean of x.
7) Find the standard deviation of x.
8) Find the z-score for x > 10.5
9) What is the probability that more than 10.5 voters in a sample of 200 voters will hold a Doctoral degree?
10) What is the probability that at least 10.5 voters in a sample of 200 voters will hold a Doctoral degree?
1 answer