plz explain

Gainesville Cigar stocks Cuban cigars that have variable lead times because of the difficulty in importing the product. Lead time is normaliy distributod with an average of 5 weeks and a standard deviation of 1 week. Demand is also a variable and normally distribuled with a mean of 175 cigars per week and a stardard deviation of 24 cigars. Refer to the standard noimal table for z-values. This exercise contains only parts a and b. a) For a 96% service level, what is the ROP? The reorder point is cigars (round your response to the nearest whole number). Z-Table