ACT scores of a sample of UTC students are shown below.
a.Compute the mean and the variance.
b.At 95% confidence, test to determine whether or not the variance of the ACT scores of the population of UTC students is significantly more than 8.

Question

ACT scores of a sample of UTC students are shown below.  
a.Compute the mean and the variance.
b.At 95% confidence, test to determine whether or not the variance of the ACT scores of the population of UTC students is significantly more than 8.

Quizplus · Accepted Answer

The Answer of ACT scores of a sample of UTC students are shown below.  
a.Compute the mean and the variance.
b.At 95% confidence, test to determine whether or not the variance of the ACT scores of the population of UTC students is significantly more than 8.

ACT Scores of a Sample of UTC Students Are Shown