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 less than or equal to 50.

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 less than or equal to 50.

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 less than or equal to 50.

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