Question 8.102

5. For the following scenarios, we are taking a random sample from a normal population with unknown. Find .

  1. Confidence level 90%, sample size 21
  2. Confidence level 95%, sample size 21
  3. Confidence level 99%, sample size 21

8.2.5

(a) 1.725 (b) 2.086 (c) 2.845