Answer :
Following are the calculation to the standard deviation:
Cr = 0.8, which is the critical ratio.
The value of Z corresponding to the critical ratio of 0.8 from the standard normal distribution tables is 0.8416
Unless the quantity ordered by the newsvendor is Q, then
Q = Mean value of demand+Z×Standard deviation of demand
Below are the specifications of the two products:
The mean requirement for both X and Y is 900O units.
Z value for both X and Y = 0.8416
Let
Sd₁ = Demand standard deviation for product X
Sd₂ = Demand standard deviation for product Y
Assuming that Sd₁ > Sd₂ (Product X does have a higher standard deviation than Product Y),
quantities for
X = Mean value of demand + Z × standard deviation of demand
= 9000 + 0.8416.Sd₂
X₁ > X₂ because
As a result 9000 + 0.8416Sd₁ > 9000 + 0.8416Sd₂
OR
The quantity ordered for X is > the quantity ordered for Y. As a result, Newsvendor orders Product X more frequently because it has a higher level of certainty.
In this question, all the estimates are wrong so, the correct answer is "Product X because it has less certain demand".
Learn more about Critical ratio here:
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