Step 4 Since the sampling distribution of p can be approximated using the normal distribution, the probability statement P(p 2 0.25) needs to be converted to the standard normal random variable z to calculate this probability. The formula below will be used to make this conversion. p - p Z = p(1 - p) n Recall that the population proportion was determined to be p = 0.29 and the sample size is n = 600 telephone numbers to call. Find the z value corresponding to p = 0.25, rounding the result to two decimal places. p - P Z= p(1 - p) n 0.25 - 0.29 S 0.29(1 - 0.29) X = X Submit Skip (you cannot come back)