A survey asked, “How effective do you think you are in talking with your childre

Question

A survey asked, “How effective do you think you are in talking with your children about drinking?” Responses are in the table below:

Suppose you want to do a test, with a significance level of .05, to determine whether there is an association between age of children and parental response. Choose the appropriate range for the value of the test statistic for this test?

a) 1.000–4.999

b)5.000–7.499

c)7.500–9.999

d)> 10.000

What is the appropriate degrees of freedom for this test?

a) 1

b) 2

c) 3

d) 6

Age of Children Response Under 13 yrs old 13 yrs and OVer Total Very Effective 100 130 230 Somewhat Effective 40 50 90 Not Effective 50 30 80 Total 190 210 400

Explanation / Answer

The statistical software output for this problem is:

Contingency table results:
Rows: Response
Columns: None

Chi-Square test:

Hence,

Appropriate range of test statistic:

7.500 - 9.999

Option C is correct.

Appropriate degrees of freedom = 2

Option B is correct.

Under 13 yrs old 13 yrs and OVer Total Very Effective 100 130 230 Somewhat Effective 40 50 90 Not Effective 50 30 80 Total 190 210 400

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