<PRE><B>Question 715222</B>
For the binomial distribution with given values for n and p, state whether or not it is suitable to use the normal distribution as an approximation. Explain your answer.
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The Rule: np and nq must be greater than 5.
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a) n = 15 p = 0.2 
np = 15*2/10 = 3
nq = 15*8/10 = 12
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Not suitable
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b) n = 53 p = 0.7
np = 53*0.7 = 37.1
nq = 53*0.3 = 15.9
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Suitable
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Cheers,
Stan H.</PRE>