Sally suspects strongly that there is a learning curve associated with solving problems assigned for operations management. She notes that it took her approximately 33 minutes to solve the first problem and 20 minutes to solve the fifth problem
a. Estimate Sally's learning curve.
b. Using your answer from part a, estimate how much longer it will take Sally to finish the three problems that remain.
(a) Her improvement from the first to fifth unit is 20/33 = 0.606. This value is between the entry 0.596 for the fifth unit under the 80% learning rate column and the entry .686 for the fifth unit under the 85% learning rate column of Table E.3. (b) Using the closer 80% factor, the total for eight problems is 33 ? 5.346 = 176.4 minutes. She has already spent 33 ? 3.738 = 123 minutes on the first five problems. She has 53 minutes remaining.
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Combining negatively correlated assets can reduce the overall variability of returns
Indicate whether the statement is true or false