What is the largest difference in stocks and bonds?
a. bonds are a binding contract, promising the holder a portion of the company's annual profit, unless it is unprofitable, while stocks are a very standard investment and pay off a predetermined amount after a period of time.
b. stocks are a share of ownership in a company and give the stockholder voting rights, while bonds are similar to lending a company or government money.
c. stocks are the most secure of all investments and bonds are some of the least secure.
d. bonds are available to the public, while stocks are reserved for the financial elite.

Two researchers are attempting to create a new psychotherapy protocol that more reduces panic attacks. they believe that they have succeeded and are now in the clinical trial period of their protocol's development. they are working with several cohort groups, some of which have been through the new protocol, while others have done the standard protocol currently recommended. if these researchers are interested in evaluating the difference in the percentage of test subjects who successfully decreased their panic attacks in 2 months on the new protocol versus the percentage of test subjects who successfully decreased their panic attacks in 2 months with the traditional protocol, which of the following statistical tests would be most appropriate? a. analysis of variance (anova) b. correlation c. chi-square test d. paired t-test e. independent t-test