The following paragraphs provide details associated with different research scen

Question

The following paragraphs provide details associated with different research scenarios. Read each paragraph, and then identify:
1) The variables described in each scenario.
2) The number of IVs and DVs described in each scenario.
3) The nature of the independent and dependent variables described in each scenario, e.g. categorical, quantitative, etc.
4) The measurement system used for each of the variables (IVs and/or DVs) described in each scenario, e.g., nominal, ordinal, interval, or ratio.
5) Select the test statistic that is appropriate for the hypothesis described in each scenario and your rationale for the selection of the test you did choose.

Vanessa is interested in determining if male adolescents who do not engage in sports are more depressed than the average male adolescent. To test this hypothesis, she obtains Kansas University Depression Inventory (KUDI) scores from 30 adolescent boys who have indicated on a questionnaire that they do not engage in sports outside of school gym classes. The KUDI is a depression measure that was standardized to have a mean of 50 for male adolescents. The test value of 50 is chosen because a value less than 50 implies less depression than a typical male adolescent, a value greater than 50 implies more depression than a typical male adolescent, and a value of 50 implies neither less nor more depression than a typical male adolescent.

Explanation / Answer

1) The variables described in each scenario.

Kansas University Depression Inventory (KUDI) scores from 30 adolescent boys who have indicated on a questionnaire that they do not engage in sports outside of school gym classes

2) The number of IVs and DVs described in each scenario.

number of IVs = 1

number of DVs = 1

3) The nature of the independent and dependent variables described in each scenario, e.g. categorical, quantitative, etc

both are quantitative

.
4) The measurement system used for each of the variables (IVs and/or DVs) described in each scenario, e.g., nominal, ordinal, interval, or ratio.

IVs and DVs are nomina

l
5) Select the test statistic that is appropriate for the hypothesis described in each scenario and your rationale for the selection of the test you did choose.

Z test because you know the standard deviation of population

if you cant know the SD of population then we will use T distribution test

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