Question: Refer to the data of Exercise 17 6 If a total

Refer to the data of Exercise 17.6. If a total sample of 135 accounts receivable is to be taken, determine how many of these should be from Division 1 under each of the following schemes.
a. Proportional allocation
b. Optimum allocation, assuming the stratum population standard deviations are the same as the corresponding sample values

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