To estimate how many miles you are from a thunderstorm, count the seconds between when you see lightning and when you hear thunder. then divide by 5. write and solve an equation to determine how many seconds you would count for a thunderstorm that is 2 miles away.

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?