Exhibit 10-3 A Statistics Teacher Wants to See If There Is Any

Multiple Choice

Exhibit 10-3
A statistics teacher wants to see if there is any difference in the abilities of students enrolled in statistics today and those enrolled five years ago.A sample of final examination scores from students enrolled today and from students enrolled five years ago was taken.You are given the following information.

-Refer to Exhibit 10-3.The standard error of
Is

A) 12.9
B) 9.3
C) 4
D) 2