A university is applying classification methods in order to identify alumni who may be interested in donating money. The university has a database of 58,205 alumni profiles containing numerous variables. Of these 58,205 alumni, only 576 have donated in the past. The university has oversampled the data and trained a random forest of 100 classification trees. For a cutoff value of 0.5, the following confusion matrix summarizes the performance of the random forest on a validation set:

Predicted

Actual

Donation

No Donation

Donation

268

20

No Donation

5375

23439

The following table lists some information on individual observations from the validation set:

Observation ID

Actual Class

Probability of Donation

Predicted Class

A

Donation

0.8

Donation

B

No Donation

0.1

No Donation

C

No Donation

0.6

Donation

a. Explain how the probability of Donation was computed for the 3 observations. Why were observations A and C classified as Donation and observation B was classified as No Donation?

b. Compute the values of accuracy, true positive rate (TPR), false positive rate (FPR) and precision. Evaluate the performance of the classifier, particularly comment on the precision measure taking into account the natural occurrence of donors in the data set.

You are the manager of the packaging department in a cookie factory. (obviously, the packaging employees cannot eat the cookies that are transferred in during the period.) after your employees insert cookies into colorful packages (step 1) for display on store shelves, the packages of cookies are then boxed using cardboard cartons (step 2) for shipment to stores. each unit of product is represented by a carton of packaged cookies. the packaging department began the period with 1,000 units of cookies. during the period, 5,000 units of cookies were transferred in from the baking department and 5,500 units of cookies were transferred out to the finished goods department. the number of units of cookies in the ending inventory of the packaging department equals:

Labor unions have used which of the following to win passage of favorable laws such as shorter work weeks and the minimum wage? a. strikes b. collective bargaining c. lobbying d. lockouts

For each of the following situations, indicate whether you agree or disagree with the financial reporting practice employed and state the basic assumption, component, or accounting principle that is applied (if you agree) or violated (if you disagree).wagner corporation adjusted the valuation of all assets and liabilities to reflect changes in the purchasing power of the dollar.spooner oil company changed its method of accounting for oil and gas exploration costs from successful efforts to full cost. no mention of the change was included in the financial statements. the change had a material effect on spooner's financial statements.cypress manufacturing company purchased machinery having a five-year life. the cost of the machinery is being expensed over the life of the machinery.rudeen corporation purchased equipment for $180,000 at a liquidation sale of a competitor. because the equipment was worth $230,000, rudeen valued the equipment in its subsequent balance sheet at $230,000.davis bicycle company received a large order for the sale of 1,000 bicycles at $100 each. the customer paid davis the entire amount of $100,000 on march 15. however, davis did not record any revenue until april 17, the date the bicycles were delivered to the customer.gigantic corporation purchased two small calculators at a cost of $32.00. the cost of the calculators was expensed even though they had a three-year estimated useful life.esquire company provides financial statements to external users every three years.