The table below shows results obtained from a study in which some patients were treated with amalgon restoration and others treated with composite restoration that did not contain mercury (based on the data obtained from Neuro psychological and renal effects of dental amalgam in children by Bellinger)   Amalgam Composite Sensory disorder 36 28 Fail no sensory disorder 231 239   a) Use a 05 significant level test for independence between the type of restoration and the presence of any adverse health conditions. Do amalgam restorations appear to have to affect the health condition of a child? b) Write a report of your findings.

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The table below shows results obtained from a study in which some patients were treated with amalgon restoration and others treated with composite restoration that did not contain mercury (based on the data obtained from Neuro psychological and renal effects of dental amalgam in children by Bellinger)

 

Amalgam

Composite

Sensory disorder

36

28

Fail no sensory disorder

231

239

 

a) Use a 05 significant level test for independence between the type of restoration and the presence of any adverse health conditions. Do amalgam restorations appear to have to affect the health condition of a child?

b) Write a report of your findings.

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