Ifnp5 and nq5, estimate P(fewerthan4) with n=13 and p=0.5 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.

a) P(fewerthan4)= (Round to four decimal places as needed.)

b) The normal approximation is not suitable