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

a) mean of X = n * p = 4.9
q = 1 - p
b) stdr of X = sqrt(npq) = sqrt(4.41) = 2.1

C) idk
c) 0.1661
c) 0.1623 is the correct answer