Please show the step-by-steps on how to get this answer/these numbers (including the original formulas) and the functions on the calculator that would need to be used.

A retailer sells many different televisions. Every month the retailer places his order to the distributor. He needs to determine the best quantity for each television type. In this question, for the sake of time, we will focus on just one type He decided to work with a 95% service level. (It means that he wants the probability to run out that television to be at most 5%.) Assume that weekly demand is normally distributed with mean = 100 and standard deviation - 10. Present inventory is 130. Lead time is 15 days, (or half of a month). How many televisions should be ordered? ? Z=1.645 Cyelle = 115 mo. (it includes 2 weeks of Pead time) M= 100/week u=600 for the cycle d: 10 0=100 = 0=600 so d=1600 = 24.5 Q = 600 + 1.645(24,5) = 640,3 62 640 ORDER 640-130=510