30. Using Graphical Evidence. Sick of spam (unsolicited broadcast email)? Do you get more spam at your work, school, or home email address? The Pew Internet and American Life Project Email at Work Survey examined the proportion of spam in email users' work and home email accounts. Two random samples were used, one of work email and one of personal email. Using only the information in the clustered bar graph below, would you conclude that the proportion of those who report “a lot of spam” is the same for work email and personal email? Why?