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Chi square test for independence

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Please help with the following problem.

A SOCIAL SCIENTIST CROSS-CLASSIFIES THE RESPONSES OF 100 RANDOMLY SELECTED PEOPLE ON THE BASIS OF GENDER AND WHETHER OR NOT THEY FAVOR STRONG GUN CONTROL LAWS. SHE OBTAINED THE FOLLOWING DATA:
FAVOR OPPOSE
MALE 40 20
FEMALE 30 10
TEST THE NULL HYPOTHESIS FOR A

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This solution provides a step by step method for testing the hypothesis under 5 step approach is discussed here.

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A SOCIAL SCIENTIST CROSS-CLASSIFIES THE RESPONSES OF 100 RANDOMLY SELECTED PEOPLE ON THE BASIS OF GENDER AND WHETHER OR NOT THEY FAVOR STRONG GUN CONTROL LAWS. SHE OBTAINED THE FOLLOWING DATA:
FAVOR OPPOSE
MALE 40 20
FEMALE 30 ...

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