In a survey conducted by an insurance company, 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 data below. Complete parts a through d. Of the online investors, 5%, 41%, and 54% responded they were "savvy,\" "experienced," and "novice," respectively. Of the traditional investors, the percentages were 4%, 58%, and 38%, respectively. Of the 600 investors surveyed, 400 were traditional investors. a. Use the information to construct a joint frequency distribution. Knowledge Level Response Savvy Experienced Novice Total Online Investor Type Traditional Total (Simplify your answers.) b. Use the information to construct a joint relative frequency distribution. Knowledge Level Response Sawy Experienced Novice Online lnvestorT e yp Traditional (Round to four decimal places as needed.) 0. Determine the proportion of investors who were both online investors and rated themselves experienced. (Round to four decimal places as needed.) d. Calculate the proportion of investors who were online investors, (Round to four decimal places as needed.)