A Researcher Conducts a Repeated-Measures Study to Evaluate a Treatment

question 73

Multiple Choice

A researcher conducts a repeated-measures study to evaluate a treatment with a sample of n = 16 participants and obtains a t statistic of t = 1.94.The treatment is expected to increase scores and the sample mean shows an increase.Which of the following is the correct decision for a hypothesis test using α = .05?

• A)Reject the null hypothesis with a one-tailed test but fail to reject with two tails
• B)Reject the null hypothesis with either a one-tailed or a two-tailed test
• C)Fail to reject the null hypothesis with either a one-tailed or a two-tailed test
• D)Fail to reject the null hypothesis with a one-tailed test but reject with two tails

Recognize the diversity and function of marine ecosystems in relation to their physical environment.

Analyze the relationship between vegetation and climate, focusing on evapotranspiration and its effects.

Understand the role of physical geography in the distribution of biomes and ecosystems.

Understand how climate and geographical factors influence the distribution and characteristics of biomes.

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Definitions:

Data Vary

This term indicates that data points can differ from each other across a set of data, showing variability or divergence.

Measure of Dispersion

A statistical parameter that describes the spread or variability of a distribution around its central measure (such as mean or median).

Minimum

The lowest value in a data set.

Maximum

The highest or greatest amount, value, or level that can be achieved or recorded.