Below you are given ages that were obtained by taking a random sample of 6 undergraduate instructors at a university.Assume the population has a normal distribution.
a.
What is the point estimate of μ?
b.
Determine the standard deviation.
c.
Construct a 90% confidence interval for the average age of undergraduate instructors.
d.
Construct a 99% confidence interval for the average age of undergraduate instructors.
e.
Discuss why the 90% and 99% confidence intervals are different.

Question

Below you are given ages that were obtained by taking a random sample of 6 undergraduate instructors at a university.Assume the population has a normal distribution.  ​ 
a.
What is the point estimate of μ?
b.
Determine the standard deviation.
c.
Construct a 90% confidence interval for the average age of undergraduate instructors.
d.
Construct a 99% confidence interval for the average age of undergraduate instructors.
e.
Discuss why the 90% and 99% confidence intervals are different.

Quizplus · Accepted Answer

The Answer of Below you are given ages that were obtained by taking a random sample of 6 undergraduate instructors at a university.Assume the population has a normal distribution.  ​ 
a.
What is the point estimate of μ?
b.
Determine the standard deviation.
c.
Construct a 90% confidence interval for the average age of undergraduate instructors.
d.
Construct a 99% confidence interval for the average age of undergraduate instructors.
e.
Discuss why the 90% and 99% confidence intervals are different.

Below You Are Given Ages That Were Obtained by Taking