Answer :
In order to use the Normal approximation to the Binomial ...
np ≥ 5 and n(1-p) ≥ 5 [note: some textbooks use 10 instead of 5, check your book or notes]
hope that helped
np ≥ 5 and n(1-p) ≥ 5 [note: some textbooks use 10 instead of 5, check your book or notes]
hope that helped