a.( 13 +14 +17 +14 +17 +15)/6 = 90/6 = 15
b. 15 -+ 1.28 * 1.67/ sqrt(6))
= [ 14.127, 15.873]
c. 15 -+ 2.33* 1.67/ sqrt(6))
= [13.411, 16.589]
You are given the following information obtained from a random sample of 6
observations. Assume the population has a normal distribution.
13 14 17 14 17 15
a. What is the point estimate of µ?
b. Construct an 80% confidence interval for µ.
c. Construct a 98% confidence interval for µ.
d. Discuss why the 80% and 98% confidence intervals are different.
1 answer
1 answer