A scientist wants to know that is there an association between the age group (Young, Adult and elderly) and the level of complaint (Serious, Moderate and Light). Use Chi-squared hypothesis test for association to test that there is an association between the age group and the level of complaint with one percent level of significance. The scientist use MS excel and found that the Chi test stat is 12.875. Critical value: At 1% = 13.277 At 5% = 9.488 At 10% = 7.779 1. Conclusion and decision 2. State the decision rule 3. State the null and the alternative hypothesis

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