Answer to Question #287178 in Statistics and Probability for RJ Ryan

Question

Teenage suicide is a serious problem in the United States. The family economic status of a sample of 38 teenage who committed suicide was distributed as follows:

Class

Number of class

Upper

14

Upper Middle 10

Lower Middle

8

Lower

6

Is there statistical evidence that the proportions in the classes differ at alpha 0.05?

1. Formulate the H₀ and H₁
2. C.V. at alpha 0.05 level of significance
3. Compute the test value: Chi-square X²
4. Decision
5. Interpretation