In a survey conducted by AIG, investors were asked to rate how knowledgeable they felt they were as investors. Both online and traditional investors were included in the survey. The survey resulted in the following data: Of the online investors, 8%, 55%, and 37% responded they were "savvy," "experienced," and "novice," respectively. Of the traditional investors, the percentages were 4%, 29%, and 67%, respectively.

Of the 600 investors surveyed, 200 were traditional investors.

a.  Use the information to construct a joint frequency distribution.

b. Use the information to construct a joint relative frequency distribution.

c.  Determine the proportion of investors who were both online investors and rated themselves experienced.

d. Calculate the proportion of investors who were online investors.