Exhibit 11-1 Last Year, the Standard Deviation of the Ages of the of the Students

Multiple Choice

Exhibit 11-1
Last year, the standard deviation of the ages of the students at UA was 1.8 years. Recently, a sample of 61 students had a standard deviation of 2.1 years. We are interested in testing to see if there has been a significant change in the standard deviation of the ages of the students at UA.
-Refer to Exhibit 11-1. The test statistic is

A) 44.08
B) 79.08
C) 81.67
D) 3.24