Testing Your statistical Questions MCQs
Testing Your statistical Questions MCQs
Answer these 20 Testing Your statistical Questions MCQs and see how sharp is your knowledge of Testing Your statistical Questions.
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1: One- and two-tailed hypotheses are both types of ______ hypotheses.
A. Null
B. Alternative
C. Directional
D. Nondirectional
2: In a study on the effects of the amount of sleep on driving performance, researchers predict that those in the group that is allowed more sleep will exhibit better driving performance. The researchers are using a ______ hypothesis.
A. Two-tailed
B. Directional
C. One-tailed
D. One-tailed and directional
3: Given that on one section of the SAT the mean is 500 and the standard deviation is 100, what is the approximate probability of a student scoring 400 or lower or 700 or higher on the test?
A. 0.12
B. 0.18
C. 0.45
D. 0.24
4: Concluding there is no effect of the independent variable is to the ______ hypothesis, as concluding there is an effect of the independent variable is to the ______ hypothesis.
A. Null; alternative
B. Alternative; null
C. One-tailed; two-tailed
D. Two-tailed; one-tailed
5: Inferential statistics allow us to ______.
A. Infer something about the sample based on the population
B. Infer something about the population based on the sample
C. Infer that the sample is representative
D. Do all of these
6: When using a ______ hypothesis, the researcher predicts that the groups being compared will differ, but does NOT predict how they will differ.
A. Null
B. Directional
C. One-tailed
D. Two-tailed
7: Given that on one section of the SAT the mean is 500 and the standard deviation is 100, what is the approximate probability of a student scoring 700 or higher on the test?
A. 0.98
B. 0.02
C. 0.12
D. 0.75
8: Given that on one section of the SAT the mean is 500 and the standard deviation is 100, what is the approximate probability of a student scoring 300 or lower or 700 or higher on the test?
A. 0.124
B. 0.022
C. 0.045
D. 0.245
9: Which of the following is an example of a nondirectional hypothesis?
A. There is a positive relationship between exercise and increased heart rate.
B. There is a negative relationship between exercise and increased heart rate.
C. There is a relationship between exercise and increased heart rate.
D. There is no relationship between exercise and increased heart rate.
10: A directional hypothesis is also known as a ______ hypothesis and a nondirectional hypothesis is also known as a ______ hypothesis.
A. Null; alternative
B. Alternative; null
C. One-tailed; two-tailed
D. Two-tailed; one-tailed
11: H0 is to Ha as ______ hypothesis is to ______ hypothesis.
A. Null; alternative
B. Alternative; null
C. One-tailed; two-tailed
D. Two-tailed; one-tailed
12: When using a ______ hypothesis, the researcher predicts the direction of the expected difference between the groups.
A. Null
B. Nondirectional
C. One-tailed
D. Two-tailed
13: In a study of the effects of exercise on stress, researchers predict simply that there will be a difference in stress level between the exercise and no-exercise groups. The researchers are using a ______ hypothesis.
A. Two-tailed
B. Directional
C. One-tailed
D. One-tailed and directional
14: Given that on one section of the SAT the mean is 500 and the standard deviation is 100, what is the approximate probability of a student scoring 300 or higher on the test?
A. 0.98
B. 0.02
C. 0.12
D. 0.75
15: ______ statistics are used in the process of hypothesis testing.
A. Descriptive
B. Null
C. Alternative
D. Inferential
16: An if–then statement of conjecture that relates variables to one another and is used to reflect the general problem statement is hypothesis
A. True
B. False
17: The difference between sample and population values is sampling error
A. True
B. False
18: A statement of equality between sets of variables is called
A. Directional
B. Nondirectional
C. Research
D. Null
19: A statement of inequality between two variables is called
A. Directional
B. Nondirectional
C. Research
D. Null
20: A research hypothesis that posits a difference between groups but not in either direction is known as
A. Directional
B. Nondirectional
C. Research
D. Null
21: A research hypothesis that posits a difference between groups in one direction is called
A. Directional
B. Nondirectional
C. Research
D. Null
22: A ____test, reflecting a directional hypothesis is one tailed test
A. Non directional
B. Directional
C. Constant
D. Variation
23: A ____ test, reflecting a nondirectional hypothesis is two tailed test
A. Non directional
B. Directional
C. Constant
D. Variation
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