In a recent year the average daily circulation of the
In a recent year, the average daily circulation of the Wall Street Journal was 1,717,000.Suppose the standard deviation is 50,940. Assume the paper’s daily circulation is normally distributed. On what percentage of days would circulation pass 1,800,000? Suppose the paper cannot support the fixed expenses of a full-production setup if the circulation drops below 1,600,000.If the probability of this even occurring is low, the production manager might try to keep the full crew in place and not disrupt operations. How often will this even happen, based on this historical information?

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