Suppose that a poll taken 10 years ago found that 62% of parents spank their children. Suppose a recent poll of 500

adults with children finds that 277 indicated that they spank their children. Assuming parents' attitude toward spanking has not changed since the original poll, how many of the 500 parents surveyed would be expected to spank their children? Do the results of the survey suggest that parents' attitude toward spanking may have changed since the original poll? Why?