A school district wants to know how many students in the district have peanut allergies. Use a 95% confidence interval to estimate the minimum number of students that need to be surveyed in order to yield results that are normally distributed with a standard deviation of 9 and a margin of error of 0.8 students with peanut allergies. (Recall the following z-scores for each level of confidence: 90% = 1.645, 95% 1.960, and 99% = 2.575.) =