Atank containing 50 gal of fresh salt but accidentally added 15 lb. to correct her mista of 2 gal/min, while drawing off well-mixed solutio the tank contains the correct amount of salt! of fresh water, wei chen was to have added 5 lb of correct her mistake she started adding fresh water at a rate solution at the same rate. how long will it take until

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?