According to the National Postsecondary Student Aid Study conducted by the U.S. Department of Education in 2008, 62% of graduates from public universities had student loans. Flag question: Question 1 Question 1 2.5 pts We randomly sample college graduates from public universities and determine the proportion in the sample with student loans. For which of the following sample sizes is a normal model a good fit for the sampling distribution of sample proportions? Group of answer choices 10 20 30 both 20 and 30 none of these