Question

Historically, a final exam in a course is passed with a probability of 0.9. The exam is given to a group of 70 students.

What is the expected number of students passing the exam?
a) 63
b) 65
c) 67
d) 69

Answer 1

The expected number of students passing the exam is 63. Therefore, the expected number of students passing the exam is 63.

Step-by-step explanation:

To find the expected number of students passing the exam, we multiply the probability of passing (0.9) by the total number of students (70).

Expected number of students passing the exam = 0.9 x 70 = 63.

Therefore, the expected number of students passing the exam is 63.