I need to understand how to calculate Z critical of values to test Chi-squared?? I have Chi-squared calculation but do not understand how to get the z critical.

Task assignments to employees are supposed to be done at random. On a certain day, all the best jobs, in order of desirability, were given to the men. Is there evidence of sex discrimination? Discuss this also in the context of a continuing, daily operation. What would happen if you tested the

1 Senior Manager

9 Manager

20 Supervisor

100 Employees

51 Males

49 Females