Mastering Mathematics Smartly
by Wee Wen Shih
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Normal approximation to Binomial
To use the Normal approximation, check that:
(1) n is large, i.e. greater than 50;
(2) np is greater than 5;
(3) nq is greater than 5.
The resulting Normal distribution has mean = np and variance = npq.
Remember to use the continuity correction.
Try this!
