Question #N178
A survey of 100 randomly selected students found that 60 students prefer to study in a quiet environment, 30 students prefer to study with music, and 10 students prefer to study in a noisy environment. If one student is selected at random from this group of 100 students, what is the probability that the student prefers to study in a quiet environment?
A. 0.1
B. 0.3
C. 0.6
D. 0.9
Correct Answer is: C
The probability of an event is the number of favorable outcomes divided by the total number of outcomes. In this case, there are 60 students who prefer to study in a quiet environment, and there are 100 students total. Therefore, the probability of selecting a student who prefers to study in a quiet environment is 60/100, or 0.6.