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An oil company has explored three different areas for possible oil reserves.  The result of the test were as given below. 



                                             Area     Total

                                   
                                       A    B    C   
Strikes                            7   10   8       25
Dry holes                       10   18   9      37

Total number 

Of test wells                  17    28  17  62        

Do the three areas have the same potential, at the 10 per-cent level of significance?

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