please answer this

(a) A study was conducted in a factory, a set of data was collected to determine whether the proportion of defectives produced was the same according to working shifts. The data were collected and shown in Table Q3(a). Table Q3(a): Data on Defectives According to Working Shifts Shift Morning Evening Night Proportion of Defectives 26 1. 5 defectives Nondefective 20 29 7 At a = 0.05, test whether the proportion of defectives depend on the working shift