Problem 6 The following contingency table summarizes the number of students ata college who have a Mastercard andfor a Visa credit card. Have Do Not Total ____ Mastercard [3] Find the proportion of Mastercard holders who have 'VISA cards. Interpret and write this proportion as a conditional probability. {b} Find the proportion of ViSA. cardholders who have Mastercards. Interpret and write this proportion as a conditional probability. [c] Are the events having a Mastercard and having a VISA. independent? justify your