SOLUTION: An experienced teacher writes an exam so that, on average, about 5% of students will earn an A grade. If she has 50 students in her class and their performance is independent, what

Question 1135830: An experienced teacher writes an exam so that, on average, about 5% of students will earn an A grade. If she has 50 students in her class and their performance is independent, what is the probability that at least one student gets an A?

Answer by VFBundy(438) (Show Source): You can put this solution on YOUR website!
Determine the probability that NONE of the students receives an 'A':

Subtract this result from 1 to determine the probability that AT LEAST ONE of the students receives an 'A':

There is a 92.31% chance that at least one of the students receives an 'A'.
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