Posted by **lauren** on Wednesday, August 8, 2012 at 6:50pm.

The number of column inches of classified advertisements appearing on Mondays in a certain daily

newspaper has mean 320 inches and standard deviation 30 inches. Suppose that the results for 100

consecutive Mondays can be regarded as a random sample and let J denote the mean number of column

inches of classified advertisements in the sample. Assuming a sample of 100 is sufficiently large, the

random variable J has a

- statistics -
**PsyDAG**, Sunday, August 12, 2012 at 8:35pm
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