20 A researcher wants to determine if socioeconomic status l

20)

A researcher wants to determine if socioeconomic status (low, moderate, high) is related to smoking (yes or no). The Chi-Square null hypothesis for this study is that socioeconomic status is related to smoking behavior.

TRUE OR FALSE

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23)

The Chi-square test for independence compares observed frequencies with:

A) Expected frequencies

B) Standard deviations

C) Standard errors

D) Phi coefficient

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24)If the slope (b₁) of a regression equation is -3.4 that means the:

A) Points on the scatter plot are all very close to the regression line

B) Pattern of the points on the scatter plot is moving downward from left to right

C) Relationship between x and y is relatively weak

D) Regression line crosses the y-axis at (0, -3.4)

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25)

In a negative relationship, as the score of one variable decreases, the score on the second variable decreases.

TRUE OR FALSE WHY

Solution

20. TRUE.

23. EXPECTED FREQUENCIES

24. Option B is correct.

25. TRUE. Negative relationship means as one increases, other should decrease and vice versa.