In a shop study, a set of data were selected to determine whether or not the proportion of defective produced by workers at a given company were the same for the day, evening and night. The following data were collected in the toys produced. Observ4ed Frequenc3y Evening D efec3tiv4e N on-defec3tiv4e Modetary bad Day 45 95 137 65 160 905 Night 80 140 990 a at 0.05 % level of significance determine if the proportion of defective is the same three shift.
