he number of students receiving an A grade in exam follows a binomial distributi

Question

he number of students receiving an A grade in exam follows a binomial distribution with probability 0.2. suppose there are 10 students in the class. find the probability that exactly 3 student will receive an A grade
None 0.2013 0.1527 0.2668 he number of students receiving an A grade in exam follows a binomial distribution with probability 0.2. suppose there are 10 students in the class. find the probability that exactly 3 student will receive an A grade
None 0.2013 0.1527 0.2668 he number of students receiving an A grade in exam follows a binomial distribution with probability 0.2. suppose there are 10 students in the class. find the probability that exactly 3 student will receive an A grade
None 0.2013 0.1527 0.2668

Explanation / Answer

as this is binomial we can simply calculate

p(A grade) =.2

p (not 8 grade) =1-.2 =.8

so choosing exactly 3 students to give a grade and rest not A

=10c3(.2)^3(.8)^7

0.2013266

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