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Suzie’s Sweet Shop makes special boxes of Valentine’s Day chocolates. Each costs

ID: 465415 • Letter: S

Question

Suzie’s Sweet Shop makes special boxes of Valentine’s Day chocolates. Each costs $13 in material and labor and sells for $20. After Valentine’s Day Suzie reduces the price to $10 and sells any remaining boxes. Demand distribution for Valentine’s Day chocolates at Suzie’s shop is shown in the following table. How many boxes of Valentine’s Day chocolates should Suzie stock?

Demand (boxes) Relative Frequency Cumulative Frequency 84 .01 85 .05 86 .12 87 .18 88 .13 89 .14 90 .1 91 .11 92 .1 93 .04 94 .02

Explanation / Answer

cost per unit for overestimating demand=Co = purchase cost per unit- sales price per unit

cost per unit for overestimating demand=Cu = profit per unit

Co=$13-$10 = $3

Cu =$20 - $13 = $7

Probability for optimal order quantity = Cu/(Cu + Co)

= 7/10=0.7

On calculating the mean and standard deviation of demand

mean = 89

Std. Deviation = 3.316

Z-value at probability 0.7 = 0.53 (use table)

Demand = 89 + 0.53*3.316

= 91 units

Suzie should stock 91 boxes.