Question 8 ' 1 \"'55 Suppose you construct a |95% condence interval from a random sample of size n = 20 with a sample mean 100 taken from a population with unknown pi and a known a" = 10 and the interval is fairly wide. Which of the following conditions would not lead to a narrower condence interval? If the populations standard deviation was smaller (9 If your sample size was smaller If you increased your sample size All of the above would lead to a narrower condence interval If you decreased your condence interval