. An article marked at Rs. 8000 is sold at Rs. 6689.60, allowing asome discount and then adding VAT If the rate of discount was double than rate of VAT find the selling price of the article without VAT

Recall that the owner of a local health food store recently started a new ad campaign to attract more business and wants to know if average daily sales have increased. historically average daily sales were approximately $2,700. the upper bound of the 95% range of likely sample means for this one-sided test is approximately $2,843.44. if the owner took a random sample of forty-five days and found that daily average sales were now $2,984, what can she conclude at the 95% confidence level?