17% of students in a statistics class receive an A. out of a sample of 30,...
17% of students in a statistics class receive an A. out of a sample of 30, what is the probability that 10 students receive an A? no more than 5 students receive an A? what is the expected value?
Homework Answers
for binomial distribution ; parameter n=30 and p=0.17
a)
probability that 10 students receive an A =30C10(0.17)10(0.83)20 =0.014582
b)
P( no more than 5 students receive an A )=P(X<=5)=
=0.597205
expected value =np=30*0.17 =5.1
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