Mrs. thompson has one-dollar, five-dollar, and ten-dollar bills that total $171. she has the
same number of five-dollar bills as one-dollar bills and ten-dollar bills combined. if she has
30 bills in all how many bills of each denomination does she have?

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?