1. Effect size is measure of the magnitude of difference between ____ groups, usually calculated as Cohen’s d
Answer
Correct Answer:
Two
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2. In which mean is used to compare a sample mean in one sample z test?
Answer
Correct Answer:
Population
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3. The sampling distribution is a distribution of ______ means based on random ______ of a fixed size from a ______.
Answer
Correct Answer:
Sample; samples; population
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4. A parametric inferential statistical test of the null hypothesis for a single sample where the population variance is known is the ______.
Answer
Correct Answer:
Z-test
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5. What is the critical value?
Answer
Correct Answer:
The inner edge of the region of rejection
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6. What is the standard error of the mean for a distribution of scores where standard deviation for the population = 24 and the size of the sample = 144?
Answer
Correct Answer:
2.0
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7. If the obtained value is higher than the critical value, we ______.
Answer
Correct Answer:
Accept the null hypothesis
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8. When can the z-test be used in statistical hypothesis testing?
Answer
Correct Answer:
When the raw score population’s standard deviation is known
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9. The standard error of the mean will always be ______ the standard deviation for a distribution of individual scores.
Answer
Correct Answer:
Smaller than
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10. What is the standard error of the mean for a distribution of scores where the standard deviation for the population = 15 and the size of the sample = 100?
Answer
Correct Answer:
1.5
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11. What is the purpose of the critical value?
Answer
Correct Answer:
To determine the size of the region of rejection
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12. The standard deviation of the sampling distribution is called the ______.
Answer
Correct Answer:
Standard error of the mean
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13. What is the standard error of the mean for a distribution of scores where standard deviation for the population = 50 and the size of the sample = 75?
Answer
Correct Answer:
5.77
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