The Central Limit Theorem states


1. The Central Limit Theorem states: (Points : 1)
The smaller the standard error of the mean, the closer it is to the population mean.
The mean of a sampling distribution of means is equal to the population mean.
The smaller the sample size, the closer the sample mean approximates the population mean.
A sample with a larger standard of error of the mean still has a mean that approximates the population mean.

2. In inferential statistics, the objective is to determine how probable it is that: (Points : 1)
The alternative hypothesis is true.
The null hypothesis is true.
The alternative hypothesis is false.
The null hypothesis is false.

3. What does it mean if your test result is “statistically significant”? (Points : 1)
You have proved your research hypothesis.
You have accepted the null hypothesis.
Your result is clinically significant.
It is unlikely that the results occurred by chance alone.

4. A range of values estimated to have a high probably of containing the population value is called: (Points : 1)
Point estimate
Standard error of the mean
Confidence interval
Standard deviation

5. A nurse researcher studied the effect of biofeedback on blood pressure. For this study, she measured blood pressure on subjects, taught them biofeedback techniques, then re-measured blood pressure on the same group of patients. Which t-test would be most appropriate for this design? (Points : 1)
Independent groups t-test
Dependent groups t-test
One-sample t-test
Pearson’s correlation coefficient

6. When the alternative hypothesis states that the difference between two groups can only be in one direction, we call this a: (Points : 1)
One-tailed test
Bi-directional test
Two-tailed test
Non-parametric test

7. Statistical tests that make assumptions about the underlying distributions are called: (Points : 1)
Parametric tests
Non-parametric tests
Error analyses

8. If you wanted to compare the effect of 3 separate kinds of interventions (3 separate groups of one independent variable -the intervention type) on a single dependent variable, the appropriate test would be: (Points : 1)
One-way ANOVA
Two-sample t-test
Multivariate ANOVA
Point biserial correlation

9. If you wanted to test a set of patients’ responses to a given therapy at 1, 3, and 6 months, you would use which statistical test? (Points : 1)
Paired t-test
Repeated measures ANOVA
Multiple ANOVA

10. What is the probability of rolling an odd number on a fair die (singular of dice) in one roll? (Points : 1)

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