a) mean of X = n * p = 4.9
q = 1 - p
b) stdr of X = sqrt(npq) = sqrt(4.41) = 2.1
C) idk
CLT for the binomial
Let X be binomial with parameters n=49 and p=1/10.
The mean of X is:
unanswered
The standard deviation of X is:
unanswered
The CLT, together with the 1/2-correction, suggests that
P(X=6)≈
unanswered
You may want to refer to the normal table.
3 answers
c) 0.1661
c) 0.1623 is the correct answer