1 2 Date 3 1/23 4 2/23 5 3/23 6 4/23 A 7 5/23 TV 86/23 Paste L 9 7/23 10 8/23 11 9/23 12 10/23 13 11/23 14 12/23 15 13/23 16 14/23 17 15/23 18 16/23 19 17/23 20 18/23 21 19/23 22 20/23 23 21/23 24 22/23 25 23/23 26 24/23 27 25/23 28 26/23 29 27/23 30 28/23 31 29/23 32 30/23 33 1/23 34 2/23 35 3/23 36 4/23 37 5/23 38 6/23 39 7/23 40 8/23 Day Sat Sun Mon Tue Wed Thu Fri Sat Sun Mon Tue Wed Thu Fri Sat Sun Mon Tue Wed Thu Fri Sat Sun Mon Tue Wed Thu Fri Sat Sun Mon Tue Wed Thu Fri Sat Sun Mon 1 1 1 1 1 1 1 1 1 Open? 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 Happy Customers 138 144 146 144 149 138 146 146 136 149 143 149 144 138 142 Number of Customers 124 146 149 141 138 145 141 119 146 145 141 146 143 146 119 139 139 149 139 145 138 134 139 Unhappy Customers % Unhappy Customers 12 6 4 6 1 12 4 4 14 1 7 1 6 12 8 26 4 1 9 12 5 9 31 4 5 9 4 7 4 31 11 11 1 11 5 12 16 11 P-Chart sample size Z LCLP UCLP 362 0.5000