Below you are given ages that were obtained by taking a random sample of 9 undergraduate students.Assume the population has a normal distribution.

a.What is the point estimate of $\mu$?
b.Determine the standard deviation.
c.Construct a 90% confidence interval for the average age of undergraduate students.
d.Construct a 99% confidence interval for the average age of undergraduate students.
e.Discuss why the 99% and 90% confidence intervals are different.

Question

Below you are given ages that were obtained by taking a random sample of 9 undergraduate students.Assume the population has a normal distribution.
  
a.What is the point estimate of $\mu$?
b.Determine the standard deviation.
c.Construct a 90% confidence interval for the average age of undergraduate students.
d.Construct a 99% confidence interval for the average age of undergraduate students.
e.Discuss why the 99% and 90% confidence intervals are different.

Quizplus · Accepted Answer

The Answer of Below you are given ages that were obtained by taking a random sample of 9 undergraduate students.Assume the population has a normal distribution.
  
a.What is the point estimate of $\mu$?
b.Determine the standard deviation.
c.Construct a 90% confidence interval for the average age of undergraduate students.
d.Construct a 99% confidence interval for the average age of undergraduate students.
e.Discuss why the 99% and 90% confidence intervals are different.

Below You Are Given Ages That Were Obtained by Taking μ\muμ

Below You Are Given Ages That Were Obtained by Taking $\mu$