Figure 2.1
Every second semester, the School of Business at a large university coordinates with local business leaders at a luncheon for graduating students, their families, and friends. Corporate sponsorship pays for the lunches of each of the graduating students, but students have to purchase tickets to cover the cost of lunches served to guests they bring with them. The following histogram represents the attendance at the luncheon, where X is the number of guests each graduating student invited to the luncheon and f is the number of graduating students in each category.
-Referring to the histogram from Figure 2.1,how many graduating students attended the luncheon?
A) 388
B) 275
C) 4
D) 152

Question

Figure 2.1
Every second semester, the School of Business at a large university coordinates with local business leaders at a luncheon for graduating students, their families, and friends. Corporate sponsorship pays for the lunches of each of the graduating students, but students have to purchase tickets to cover the cost of lunches served to guests they bring with them. The following histogram represents the attendance at the luncheon, where X is the number of guests each graduating student invited to the luncheon and f is the number of graduating students in each category. 
-Referring to the histogram from Figure 2.1,how many graduating students attended the luncheon?
A) 388 
B) 275 
C) 4 
D) 152

Quizplus · Accepted Answer

The total number of graduating students who attended the luncheon can be found by adding up the frequencies in each bar of the histogram. Looking at the histogram, we can see that there are 5 bars with non-zero frequency values. Adding up these frequencies gives us:

f(0) + f(1) + f(2) + f(3) + f(4) = 30 + 78 + 66 + 58 + 43 = 275

Therefore, there were 275 graduating students who attended the luncheon. Choice A is incorrect because it adds up all the frequencies in the histogram, including the bar with 0 guests, which corresponds to graduating students who did not invite any guests. Choices C and D are also incorrect because they do not take into account all the graduating students who attended the luncheon.

Figure 2.1 Every Second Semester, the School of Business at a Large