Exam 11: Tea for Two: Tests Between the Means of Different Groups

Pooled standard deviation is part of the formula for the Cohen's d effect size.Pooled standard deviation is similar to an average of the standard deviations from both groups.

(True/False)

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Question 61

What does the symbol p represent in the following: t₍₄₂₎ = 5.15, p < .01?

(Multiple Choice)

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Question 62

The SPSS output for an independent-samples t-test includes all of the following EXCEPT this:

(Multiple Choice)

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Question 63

A researcher is testing a two-tailed null hypothesis at the p < .01 level with df = 48.What critical value would she or he use? Justify your answer.

(Essay)

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Question 64

A researcher wants to study the impact of pizza consumption on the happiness of college freshmen, sophomores, and juniors.What test statistic would the researcher need to use to evaluate the difference in effectiveness between the groups?

(Multiple Choice)

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Question 65

When it comes to significance testing, the level of risk is ______.

(Multiple Choice)

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Question 66

The research hypothesis in an independent-samples t-test would be represented as follows:

(Multiple Choice)

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Question 67

Under what conditions would a researcher choose to use a t-test for independent samples?

(Essay)

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Question 68

In the effect size formula, what does X₁ bar stand for?

(Multiple Choice)

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Question 69

Showing 61 - 69 of 69

Pooled standard deviation is part of the formula for the Cohen's d effect size.Pooled standard deviation is similar to an average of the standard deviations from both groups.

What does the symbol p represent in the following: t₍₄₂₎ = 5.15, p < .01?

The SPSS output for an independent-samples t-test includes all of the following EXCEPT this:

A researcher is testing a two-tailed null hypothesis at the p < .01 level with df = 48.What critical value would she or he use? Justify your answer.

A researcher wants to study the impact of pizza consumption on the happiness of college freshmen, sophomores, and juniors.What test statistic would the researcher need to use to evaluate the difference in effectiveness between the groups?

When it comes to significance testing, the level of risk is ______.

The research hypothesis in an independent-samples t-test would be represented as follows:

Under what conditions would a researcher choose to use a t-test for independent samples?

In the effect size formula, what does X₁ bar stand for?

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