Majesty Video Production Inc. wants the mean length of its advertisements to be 34 seconds. Assume the distribution of ad length follows the normal distribution with a population standard deviation of 2 seconds. Suppose we select a sample of 13 ads produced by Majesty. What is the probability that the sampling error would be less than -1.5 or more than 1.5? (Round your z value and final answer to 4 decimal places.)