A study was done to see if the type of job a person holds and their hair color are independent.  The table below shows the results of the 500 person study.

  Blonde Red Head Brunette Black
Service 42 19 70 94
Manufacturing 30 18 50 60
Other 25 22 40 30


A.  Compute the contribution to c2 from the Blondes who work in the Service industry.  That is, first find the expected count for that cell, then find the c2 for that count.

B.  State the null and alternative hypotheses.

C.  If the c2 statistics was 13.11, what can be concluded at the 0.05 level of significance?