Final answer:
To find the profitable moving average in November 2013, including four months prior and four months after, the average of the profits for those nine months is approximately $11,333.33.
Step-by-step explanation:
To find the profitable moving average in November 2013, including four months prior and four months after, we need to calculate the average of the profits for those nine months. The profits for the relevant months are as follows: $5,500 $6,300 $7,200 $3,000 $6,000 $7,200 $7,500 $4,000 $6,500 $8,100 $7,800 $5,000 $7,000 $9,000 $8,100 $6,000. Adding up these profits gives a total of $102,000. Dividing this total by 9 (for the number of months) gives an average of $11,333.33. Therefore, the profitable moving average for November 2013, including four months prior and four months after, is approximately $11,333.33.