Based on historical data, your manager believes that 27% of the company's orders come from first-time customers. a random sample of 57 orders will be used to estimate the proportion of first-time-customers. what is the probability that the sample proportion is less than 0.29? note: you should carefully round any z-values you calculate to 4 decimal places to match wamap's approach and calculations. answer = (enter your answer as a number accurate to 4 decimal places.)