Sales of Toyota Corolla Cars. The file Toyota Corolla. csv contains data on used cars (Toyota Corollas) on sale during late summer of 2004 in the Netherlands. It has 1436 records containing details on 38 attributes, including Price, Age, Kilometers, HP, and other specifications. The goal will be to predict the price of a used Toyota Corolla based on its specifications. a. Identify the categorical variables.
b. Explain the relationship between a categorical variable and the series of binary dummy variables derived from it.
c. How many dummy binary variables are required to capture the information in a categorical variable with N categories?
d. Use R to convert the categorical variables in this dataset into dummy variables, and explain in words, for one record, the values in the derived binary dummies.
e. Use R to produce a correlation matrix and matrix plot. Comment on the relation- ships among variables.

Jordan, inc. sells fireworks. the company’s marketing director developed the following cost of goods sold budget for april, may, june, and july. april may june july budgeted cost of goods sold $62,000 $72,000 $82,000 $88,000 jordan had a beginning inventory balance of $3,000 on april 1 and a beginning balance in accounts payable of $14,600. the company desires to maintain an ending inventory balance equal to 15 percent of the next period’s cost of goods sold. jordan makes all purchases on account. the company pays 65 percent of accounts payable in the month of purchase and the remaining 35 percent in the month following purchase. required prepare an inventory purchases budget for april, may, and june. determine the amount of ending inventory jordan will report on the end-of-quarter pro forma balance sheet. prepare a schedule of cash payments for inventory for april, may, and june. determine the balance in accounts payable jordan will report on the end-of-quarter pro forma balance sheet.

Google started as one of many internet search engines, amazon started as an online book seller, and ebay began as a site where people could sell used personal items in auctions. these firms have grown to be so large and dominant that they are facing antitrust scrutiny from competition regulators in the us and elsewhere. did these online giants grow by fairly beating competition, or did they use unfair advantages? are there any clouds on the horizon for these firms -- could they face diseconomies of scale or diseconomies of scope as they continue to grow? if so, what factors may limit their continued growth?

Martha entered into a contract with terry, an art dealer. according to the contract, terry was to supply 18 th century artifacts to martha for the play she was directing, and martha was ready to pay $50,000 for this. another director needed the same artifacts and was ready to pay $60,000. terry decided not to sell the artifacts to martha. in this case, the court may order terry to: