Gainesville Cigar stocks Cuban cigars that have variable lead times because of the difficulty in importing the? product: Lead time is normally distributed with an average of 5 weeks and a standard deviation of 3 weeks. Demand is also a variable and normally distributed with a mean of 175 cigars per week and a standard deviation of 25 cigars. Refer to the standard normal table LOADING... for? z-values. This exercise contains only parts a and b. ?a) For a 90?% service? level, what is the? ROP? The reorder point is nothing cigars ?(round your response to the nearest whole? number). For a 95?% service? level, what is the? ROP? The reorder point is nothing cigars ?(round your response to the nearest whole? number).
average demand (d) = 175
standard deviation of demand (s) = 25
lead time (L) = 5
standard deviatio of lead time (lt) = 3
a) service level = 90%
z score using standard normal table for 90% = 1.28
ROP = d*L + z*(L*s2 + d2 * lt2)
ROP = 175*5 + 1.28*(5*252 + 1752 * 32)
= 875 + 1.28*(3125 + 275625)
= 875+1.28*528
= 875+675.84
= 1550.84 = 1551 is the ROP
b) service level 95%
z = 1.645
ROP = d*L + z*(L*s2 + d2 * lt2)
ROP = 175*5 + 1.645*(5*252 + 1752 * 32)
= 875 + 1.645*(3125 + 275625)
= 875+1.645*528
= 875+868.56
= 1743.56 = 1744 is the ROP
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