In a poll conducted by the General Social Survey,81%of respondents said that their jobs were sometimesor always stressful.Suppose a sample of 500 adults is takes and the proportion that say their jobs were sometimes or always stressful is recorded.

Using the values for the mean and standard deviation you selected above, what is the probability that less than 78%of the 500respondents say their jobs were sometimes or always stressful?

Round to four decimal places.