14. UK-Apps Inc. has developed two mobile applications for Mardroid operation system: Gear-App and Beer-App. The apps are free to download, but if the users want to get the updates once every four weeks, they have to pay for each update. It has been found out that users prefer to get both updates simultaneously, paying 30 pence for Gear-App and 26 pence for Beer-App. Those who continue getting the updates are considered loyal customers, whose value is estimated at 54 pounds sterling and 60 pence. It is also known that the average combined gross margin is 15%. What is the retention rate for UK-Apps Inc.? Note: 1 pound sterling is 100 pence, and we assume 52 weeks per year. 15. Assume the specifications for a golden pen end-plug are 5.00 0.10 (in mm), as it is believed that if the value of the quality characteristic deviates from 5 mm by the tolerance of 0.1 mm, the plug will either fall out or won't fit. The Taguch: loss function is estimated to be L(x) 5,500 (x-T). What is the estimated loss, if the quality characteristic under study takes on a value of 4.91 mm, with 30 pens produced?