Calculate the test statistic

Randomly selected nonfatal occupational injuries and   illnesses are categorized according to the day of the week that they first   occurred, and the results are listed below (based on data from the Bureau of   Labor Statistics). Use a .05 significance level to test the claim that such   injuries and illnesses occur with equal frequency on the different days of   the week.           Day   | Monday Tuesday Wednesday Thursday Friday   _________________________________________________________   No.   | 23 23 21 21 19               A)   What is the critical Chi-square value?        B)   Calculate the test statistic.        C)   What is your decision/interpretation?

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