Below you are given ages that were obtained by taking a random sample of 9 undergraduate
students. Assume the population has a normal distribution.
19 22 23 19 21 22 19 23 21
a. What is the point estimate of μ?
b. Construct a 99% confidence interval for the average age of undergraduate students.
c. Construct a 98% confidence interval for the average age of undergraduate students.
d. Discuss why the 98% and 99% confidence intervals are different.
students. Assume the population has a normal distribution.
19 22 23 19 21 22 19 23 21
a. What is the point estimate of μ?
b. Construct a 99% confidence interval for the average age of undergraduate students.
c. Construct a 98% confidence interval for the average age of undergraduate students.
d. Discuss why the 98% and 99% confidence intervals are different.