At a little-known vacation spot, taxi fares are a bargain. A 27-mile taxi ride takes 36 minutes and costs $10.80. You want to find the cost of a 45-mile taxi ride. What unit price do you need?

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?