Over the last year the absentee rate averaged 8.2 days absent with a standard deviation of 6 days. One dept with 40 employees had an absentee rate of 12 days per employee. During an investigation the dept head argues as follows if you took 40 employees at random from the corporation there's a pretty good chance the average number of days absent would be 12 or more. that's what happened to us chance variation. Is this a good defense? Justify your answer.