6piles of marbles are arranged in a triangle pattern. each side of the triangle has a total of 9 marbles. add 1 more marble to one of the piles, so that the total number of marbles on each side remains 9. you are allowed to move the marbles but not take any out.

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?