Use the contingency table below to calculate the marginal frequencies and nd the expected frequency for each cell in the contingency table. Assume that the variables are independent. Preference 5 Bank employee New procedure Old procedure No preference Teller 25 24 10 Customer service 21 16 54 representative (a) Calculate the marginal frequencies and sample size. Preference Bank employee New procedure Old procedure No preference Total Teller 25 24 10 Customer service 21 16 54 representative Total (b) Find the expected frequency for each cell in the contingency table. (Round to two decimal places as needed.) Preference Bank employee New procedure Old procedure No preference Teller Customer service representative