Experience suggests that 4 percent of all college students had a tonsillectomy. In a sample of 300 college students, we need to find the probability that at least 10 had a tonsillectomy. It is acceptable to use the normal distribution to estimate this probability.

Question

Quizplus · Accepted Answer

Since the sample size is large enough (n=300) and the expected cell count is greater than 5 (0.04*300=12), we can assume that the distribution of the sample proportion of students who had a tonsillectomy is approximately normal. Therefore, we can use the normal distribution to estimate the probability that at least 10 students had a tonsillectomy.

Experience Suggests That 4 Percent of All College Students Had