work: In a poll about work, 40% of respondents said that their jobs were sometimes or always stressful. Nine workers are chosen at random Part 1 of 2 (a) What is the mean number who find their jobs stressful in a sample of 9 workers? Round the answer to two decimal places. The mean number who find their jobs stressful is 0.48 Part 2 of 2 X (b) What is the standard deviation of the number who find their jobs stressful in a sample of 9 workers? Round the answer to four decimal places. The standard deviation of the number who find their jobs stressful is 7.64 Ś

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