Question: With n = 20 births and p = 0.512 for a boy, find P(fewer than 8 boys). If the requirements of np 5 and

With n = 20 births and p = 0.512 for a boy, find P(fewer than 8 boys).
If the requirements of np ≥ 5 and nq ≥ 5 are both satisfied, estimate the indicated probability by using the normal distribution as an approximation to the binomial distribution; if np < 5 or nq < 5, then state that the normal approximation should not be used.

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