Differences Between Two Sample Averages Are Most Likely to Be

question 156

Multiple Choice

Differences between two sample averages are most likely to be statistically significant if

• A)the difference between the samples is large.
• B)the standard deviations of the samples are large.
• C)both samples are drawn from the same population.
• D)the sample means are larger than the sample medians.

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Definitions:

Null Hypothesis

The premise in statistical testing that proposes there is no effect or no difference, serving as the basis for assessing observational data.

Heavy Pollution

Refers to a high level of contamination in the environment, often caused by industrial, agricultural, or urban activities, that can harm human health and ecosystems.

Wilcoxon Signed Rank Test

A non-parametric statistical test used to compare two related samples, matching pairs, or repeated measurements on a single sample to assess whether the population mean ranks differ.

Null Hypothesis

A default hypothesis that there is no effect or no difference, and it's the assumption to be tested in statistical analysis.