Asales software company decides to find out how their products are being used and sold. They approach five different sales executives who use their software and interview them. In order for executives to agree to the interviews the company provides a large cash incentive. They conduct the interviews, receive the information and pay the executives their incentives. This is an example of what disadvantage of the in-depth interview method? interviews were expensive to conduct interviews were difficult to collect the data from interviews might have been subject to groupthink

Mr. beautiful, an organization that sells weight training sets, has an ordering cost of $40 for the bb-1 set. (bb-1 stands for body beautiful number 1.) the carrying cost for bb-1 is $5 per set per year. to meet demand, mr. beautiful orders large quantities of bb-1 seven times a year. the stockout cost for bb-1 is estimated to be $50 per set. over the past several years, mr. beautiful has observed the following demand during the lead time for bb-1: demand during lead time probability40 0.150 0.260 0.270 0.280 0.290 0.1total 1.0the reorder point for bb-1 is 60 sets. what level of safety stock should be maintained for bb-1?