Asked by Alicko

7. A firm has appointed a large number of dealers all over the country to sell its bicycle; it is interested in knowing the average sales per dealer. A random sample of 25 dealers is selected for this purpose, the sample mean is birr 50,000 and sample standard deviation is 20,000. The population of sales is approximately normal. Construct an interval estimate with 99 % confidence level.

3 years ago