Two bike riders ride around a circular path. the first rider completes one round in 12 minutes and the second rider complete it in 18 minutes. if they both start at the same place and the same time and go in the same direction, after how many minutes will they meet in the same place again?

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?