A. A vote for valedictorian is coming up. Natasha has done a survey of 75 people where 48 students have told her that Steve will receive their votes. This should be accurate 19 times out of 20. Find the confidence interval.

B. Most of a bag of Chocolate Chip cookies was eaten to see how many chocolate chips were contained in each cookie. Here is a sample of some of the data. A sample was taken of 30 chocolate chip cookies. The mean was found to be 21.33 with a standard deviation of 6.

27 13 17 19 31 7 22 20 23 30 9 22 24 30 22 23 14 21 28 26 24 22 27 12 16 20 24 22 23 22