Based on her past experience, a professor knows that the probability distribution function for X = number of students who come to her office hours on any given Wednesday is given below.
-The expected value of X is 1.85. Interpret this value in the context of the problem.
A) If you were to observe many students, the average number of students that visit office hours is 1.85.
B) If you were to observe many Wednesdays, the average number of students that visit office hours is 1.85.
C) On average, the number of students that visit office hours will deviate from the mean by 1.85.
D) Next Wednesday, we expect 2 students to visit office hours.

Question

Based on her past experience, a professor knows that the probability distribution function for X = number of students who come to her office hours on any given Wednesday is given below. 
-The expected value of X is 1.85. Interpret this value in the context of the problem.
A) If you were to observe many students, the average number of students that visit office hours is 1.85. 
B) If you were to observe many Wednesdays, the average number of students that visit office hours is 1.85. 
C) On average, the number of students that visit office hours will deviate from the mean by 1.85. 
D) Next Wednesday, we expect 2 students to visit office hours.

Quizplus · Accepted Answer

The expected value of X represents the average number of students visiting office hours over many observations, such as many Wednesdays.

Based on Her Past Experience, a Professor Knows That the Probability