Question

On the following random samples of social class, test the null hypothesis that neighborliness does not...

On the following random samples of social class, test the null hypothesis that neighborliness does not vary by social class. (Note: Higher scores indicate greater neighborliness.) ANS: F =2.72 (observed); 3.49 (critical), df = 3, 12 .05 LOS.

Lower                          Working                                  Middle                         Upper

    8                                    7                                            6                                  5

    4                                    3                                            5                                  2

    7                                    2                                            5                                  1

    8                                    8                                            4                                  3

State the research problem

State the null and the alternative hypotheses (written and symbolically)

State the decision rule? (.05 LOS)

Calculate the F value

What is the decision?

What is your conclusion (interpretation)?

Supply the source table to support your findings.

Homework Answers

Answer #1

Ans:

We want to know if there is difference in neighborliness depending on the social class.

H0: There is no difference in neighborliness depending on the social class.

Ha:There is difference in neighborliness depending on the social class.

critical F value=FINV(0.05,3,12)=3.49

F value=2.72

(refer below anova table)

Decisio:

Fail to reject the null hypothesis.(as F<3.49)

Conclusion:

There is not sufficient evidence to conclude that neighborliness does not vary by social class

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