Measuring changes in sales following a marketing campaign is now easier than ever in the past because of Internet technology and the use of "cookies."

A study was recently conducted at a major university to determine whether there is a difference in the proportion of business school graduates who go on to graduate school within five years after graduation and the proportion of non-business school

graduates who attend graduate school. A random sample of 400 business school graduates showed that 75 had gone to graduate school while in a random sample of 500 non-business graduates, 137 had gone on to graduate school. Based on these sample data, and testing at the 0.10 level of significance, what is the value of the test statistic?A) Approximately z = 1.645 B) About z = -3.04 C) Approximately z = 3.45 D) About z = 1.96

The following information pertains to Garcia Company:

Total assets $50,000 Net operating profit after taxes $10,000 Total current liabilities $10,000 Total expenses $60,000 Total liabilities $15,000 Total revenues $80,000 Invested capital is defined as total assets minus current liabilities. The after-tax cost of capital is 20%. What is the residual income? A) $2,000 B) $4,000 C) $12,000 D) $20,000