Stress at work: In a poll about work, 46% of respondents said that their jobs were sometimes or always stressful. Sixteen workers are chosen at random. Part 1 of 2 (a) What is the mean number who find their jobs stressful in a sample of 16 workers? Round the answer to two decimal places. The mean number who find their jobs stressful is X Part 2 of 2 (b) What is the standard deviation of the number who find their jobs stressful in a sample of 16 workers? Round the answer to four decimal places. The standard deviation of the number who find their jobs stressful is X