Suppose, as in Exercise 12.1, that two populations have respective variances 2 1 = 9 and
Chapter 12, Problem 12.3(choose chapter or problem)
Suppose, as in Exercise 12.1, that two populations have respective variances 2 1 = 9 and 2 2 = 25. Find the smallest sample size and the corresponding sample allocation that will yield a 95% confidence interval for 1 2 that is 2 units in length.
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