The grades of a sample of 5 students, selected from a large population, are given below.
a.Determine a point estimate for the variance of the population.
b.Determine a 95% confidence interval for the variance of the population.
c.At 90% confidence, test to determine if the variance of the population is significantly less than 130.

Question

The grades of a sample of 5 students, selected from a large population, are given below.  
a.Determine a point estimate for the variance of the population.
b.Determine a 95% confidence interval for the variance of the population.
c.At 90% confidence, test to determine if the variance of the population is significantly less than 130.

Quizplus · Accepted Answer

The Answer of The grades of a sample of 5 students, selected from a large population, are given below.  
a.Determine a point estimate for the variance of the population.
b.Determine a 95% confidence interval for the variance of the population.
c.At 90% confidence, test to determine if the variance of the population is significantly less than 130.

The Grades of a Sample of 5 Students, Selected from a Large