Harry's Hardware sells all the ordinary hardware items. One of the most popular items is Great Glue HH, a glue that is made just for Harry's Hardware. The selling price is $4 per bottle, but unfortunately, the glue gets hard and unusable after one month. The cost of the glue is $1.20. deviation is 7. During the past several months, the mean sales of glue have been 60 units, and the standard a) How many bottles of glue should Harry's Hardware stock? Assume that sales follow a normal distribution? b) What should the selling price and order quantity be, if he wishes to have a stockout of less than 5%