If np 5 and nq5estimate P more than 4 with n13 and p030 by u

If np 5 and nq5,estimate P (more than 4) with n=13 and p=0.30 by using the normal distribution as an approximation to the binomial distribution; if np<5 or nq<5, then state that the normal approximation is not suitable.

Select the correct choice below and, if necessary, fill in the answer box to complete your choice.

A.

P(more than 4)= ( ) (Round to four decimal places as needed.)

B.

The normal distribution cannot be used.

Solution

Here, we see that

n p = 13*0.3 = 3.9 < 5

Thus,

OPTION B: The normal distribution cannot be used. [ANSWER, B]