(a)According to a recent report, a worker in the IT industry spends, on average, 419 minutes daily on the job. Suppose the standard deviation of time spent on the job is 27 minutes. If the distribution of time spent on the job is approximately bell-shaped, between what two times would 68% of data fall? Suppose a worker spends 400 minutes on the job. What is that worker's z-score? Comment on the result.