Sales of a new product will be profitable if the average of sales per store exceeds 100 per week. The product was test-marketed for one week at 10 stores, with the results listed in the file P09_65.xlsx. Assume that sales at each store are at least approximately normally distributed.
a. Is this enough evidence to persuade the company to market the new product?
b. How would you make the decision if you were deciding whether to market the new product? Would you use hypothesis testing?