Based on Data from Two Very Large Independent Samples, Two $$\alpha = 0.02$$

question 65

Multiple Choice

Based on data from two very large independent samples, two students tested a hypothesis about
Equality of population means using $$\alpha = 0.02$$
2) One student used a one-tail test and rejected the null
Hypothesis, but the other used a two-tail test and failed to reject the null. Which of these might
Have been their calculated value of t?

• A) 2.22
• B) 1.88
• C) 1.22
• D) 2.66
• E) 1.55

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Definitions:

Sample Means

Average values derived from a subset (sample) of a larger population.

Standard Deviation

Square root of the variance that represents the average deviation of a score from the mean.

Sampling Distribution

The probability distribution of a given statistic based on a random sample, used to estimate properties of an underlying population.

Mean

The arithmetic average of a set of scores.