Answer to Question #303669 in Statistics and Probability for Nofiupelumi

Question #303669

Nigeria population consist of three major ethnic group Yoruba(Y), Hausa (H) and Ibo(I), which make up 30%, 60% and 10% of the population respectively. A sample of 80people includes 21from Yoruba, 57 from Hausa and 2 from Ibo. Is there any significance evidence that the sample is biased at 5% level?

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