The Lions football team is having a meeting with fans to discuss salaries. The team president says, “we can’t afford to be any more generous because our average salary is almost $3,000,000 a year.” A fan replies, “Nonsense. Your average player only makes $750,000 a year—you can easily afford a raise.” If they are using the same set of data, how can their averages be different? Which measure of center might the president have used?
Which might the fan have used?

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?