The area of a rectangular region is 6.2 × 10^3 square feet. The length

of the rectangular region is 1.55 × 10^2 feet. How much does it cost to

surround the region with a border that costs $0.80 per foot?

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?