[Solution Library] The monthly sales of an appliance store are distributed according to a normal law, with a standard deviation of 900 €. In a statistical
Question: The monthly sales of an appliance store are distributed according to a normal law, with a standard deviation of 900 €.
In a statistical study of sales made in the last nine months, a confidence interval has been found for the mean Monthly sales, the ends of which are €4663 and €5839
- What have been the average sales in these nine months?
- What is the confidence level for this interval?
Deliverable: Word Document 
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