30. Retention rates. In 2004 the testing company ACT,
Chapter 22, Problem 30(choose chapter or problem)
30. Retention rates. In 2004 the testing company ACT, Inc., reported on the percentage of first-year students at 4-year colleges who return for a second year. Their sample of 1139 students in private colleges showed a 74.9% retention rate, while the rate was 71.9% for the sample of 505 students at public colleges. Does this provide evidence that there's a difference in retention rates of first-year students at public and private colleges?
Unfortunately, we don't have that question answered yet. But you can get it answered in just 5 hours by Logging in or Becoming a subscriber.
Becoming a subscriber
Or look for another answer