A Math Professor Once Claimed That 90% of Students Pass

Multiple Choice

A math professor once claimed that 90% of students pass a particular class of hers.To check this claim, a random sample of 150 students who had taken this class was obtained.It was found that 129 passed the class.If the professor is correct, what is the probability that 129 or fewer of the students in such a sample would have passed the class?

A) 0.9484
B) 0.0516
C) 0.5516
D) 0.4484