Mira is making telescopes, each consisting of 2 lenses, 1 tube, and 1 eyepiece. lenses can be purchased only in packs of 50, tubes only in packs of 10, and eyepieces only in packs of 30. however, half of the lenses in each pack are not usable for telescopes. if all parts are used only for the telescopes, what is the minimum number of lenses mira must purchase to make a set of telescopes with no leftover components other than the unusable lenses? a. 75b. 150c. 300d. 600e. 7,500

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?