A drugstore manager needs to purchase adequate supplies of various brands of toothpaste to meet the ongoing demands of its customers. In particular, the company is interested in estimating the proportion of its customers who favor the brand of toothpaste, Aquafresh. The Data sheet of the file P08_15.xlsx contains the toothpaste brand preferences of 200 randomly selected customers, obtained recently through a customer survey. Calculate a 95% confidence interval for the proportion of all of the company’s customers who prefer Aquafresh toothpaste. Round your answers to three decimal places, if necessary. Aquafresh Lower Limit Upper Limit How might the manager use this confidence interval for purchasing decisions? The confidence interval gives the manager an estimate of what the SelectdemandsupplyItem 3 for the product will be. If the interval is too SelectwidenarrowItem 4 , the manager can always sample SelectmorelessItem 5 customers.