1. It is important for managers of corporations to act ethically? ___________.  ?(Select the best choice? below.)

A. because business managers must answer to a higher authority

B. because ethical behavior is its own justification

C. because it is important for a business to be trusted by? investors, customer and the public if it is to succeed

D. because a violation of ethics will be punished by the law

2. When comparing two groups, I can reject the Null that they have the same mean for some measured variable with 95% confidence if the sample means differ by:

A. more than 10%

B. more than 50%

C. At least 1 standard deviation

D. About 2 standard deviations