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Table 1.

A summary of the χ2 analysis of the effects of cortisol treatment on social status in size-matched pairs of rainbow troutOncorhynchus mykiss confined together for 5 days

Treatmentχ2χ20.05,1Conclusion
Cortisol 5.14 (14) 3.84 Reject Ho (P<0.025) 
Cortisol+RU486 0.8 (10) 3.84 Fail to reject Ho (P>0.25) 
Treatmentχ2χ20.05,1Conclusion
Cortisol 5.14 (14) 3.84 Reject Ho (P<0.025) 
Cortisol+RU486 0.8 (10) 3.84 Fail to reject Ho (P>0.25) 

Numbers in parentheses are N values. The null hypothesis(Ho) was that there was a 50% probability that the treated fish within a pair would become subordinate. The alternative (HA) was that the treatment tested had a significant effect on this probability.

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