The rows are as follows: Shopper #, No. Items, Card/cash. 6, 32, cash 7, 12, cash 8, 45, card 9, 40, cash 10, 6, card. Timei=23.56+4.30(No. Itemsi)+10.85(Card Paymenti). Using this equation, we can predict the time for each new shopper. Predict what might happen if we had cash-only tills. Would you expect this to cause an important change in the queueing system