Now that we know the normal distribution will provide a reasonable approximation to the sampling distribution of p, the next step is to convert p to a z-score. Recall that n = 230, p = 0.02, and p = 0.07. Also, recall the following z-score formula. z = p p p(1 p) n Determine the z-score for p, rounded to two decimal places. z = p p p(1 p) n = 0.02 Correct: Your answer is correct. 0.07 0.07(1 0.07) 230