Exhibit 11-5
Last school year, the student body of a local university consisted of 30% freshmen, 24% sophomores, 26% juniors, and 20% seniors. A sample of 300 students taken from this year's student body showed the following number of students in each classification.
We are interested in determining whether or not there has been a significant change in the classifications between the last school year and this school year.
-Refer to Exhibit 11-5. The expected frequency of seniors is
A)60
B)20%
C)68
D)64

Question

Exhibit 11-5
Last school year, the student body of a local university consisted of 30% freshmen, 24% sophomores, 26% juniors, and 20% seniors. A sample of 300 students taken from this year's student body showed the following number of students in each classification.
  We are interested in determining whether or not there has been a significant change in the classifications between the last school year and this school year.
-Refer to Exhibit 11-5. The expected frequency of seniors is
A)60 
B)20% 
C)68 
D)64

Quizplus · Accepted Answer

The expected frequency of seniors is calculated based on the total number of observations and the proportion of seniors in the population. Without specific data from Exhibit 11-5, the choice A) 60 is provided as the expected frequency.

Exhibit 11-5 Last School Year, the Student Body of a Local University