Statistical Testing One Sample Mean MCQs
Statistical Testing One Sample Mean MCQs
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1: Distribution of sample means for an infinite number of samples of size N randomly selected from the population is sampling distribution of mean
A. True
B. False
2: Distribution of statistics for samples randomly drawn from populations is sampling distribution
A. True
B. False
3: Standard deviation of the sampling distribution of the mean; average deviation of a sample mean from the population mean is standard error of mean
A. True
B. False
4: Theorem stating that sample means are approximately normally distributed for an ____ number of random samples drawn from a population is central limit theorem
A. Infinite
B. One
C. Zero
D. Two
5: Statistical procedure testing the difference between a sample mean and a population mean when population standard deviation is known is ___ test for mean
A. A
B. X
C. Y
D. Z
6: Statistical procedure testing the difference between a sample mean and a population mean when population standard deviation is known is population standard error of mean
A. True
B. False
7: Assumption that a sample is created by random selection from the population is called assumption of ____ sampling
A. Constant
B. Random
C. Linear
D. Nonlinear
8: Assumption of interval of ratio scale of measurement that variables being analyzed are measured at the interval or ratio scale of measurement.
A. True
B. False
9: Assumptions of _____ that scores for a variable are approximately normally distributed in the population.
A. Molality
B. Molarity
C. Normality
D. None of these
10: Assumptions of _____ that scores for a variable are approximately normally distributed in the population.
A. Molality
B. Molarity
C. Normality
D. None of these
11: Distribution of the t statistic based on an infinite number of samples of size N randomly drawn from the population is student t distrbution
A. True
B. False
12: Number of values or quantities free to vary when a statistic is used to estimate a parameter is degrees of ____
A. Position
B. Freedom
C. Value
D. All of these
13: Statistical procedure testing the difference between a sample mean and a hypothesized population mean when the population standard deviation is not known is t test for ___ mean
A. One
B. Two
C. Three
D. Fourth
14: Standard deviation of the sampling distribution of the mean; average deviation of a sample mean from the population mean is standard error of mean
A. True
B. False
15: The degrees of freedom for one sample is N + 1.
A. True
B. False
16: The sampling distribution of the mean consists of samples of varying sizes.
A. True
B. False
17: A t-test is used instead of the z-test ______.
A. A t-test is used instead of the z-test ______.
B. When σ is known
C. When df is greater than 100
D. For a two-tailed test, but not for a one-tailed test
18: The notation p > .05 would be associated with a decision to not reject the null hypothesis.
A. True
B. False
19: Increasing alpha has the effect of ______.
A. Increasing the degrees of freedom
B. Increasing the likelihood of rejecting the null hypothesis
C. Reducing the degrees of freedom
D. Decreasing the likelihood of rejecting the null hypothesis
20: You are doing hypothesis testing with a non-directional alternative hypothesis, and α = .05. Which of the following would be a critical value for the z-statistic?
A. +/– 1.64
B. +/– 1.96
C. +/– 2.33
D. +/– 2.58
21: If you increase sample size, the standard error of the mean will also increase.
A. True
B. False
22: You are doing hypothesis testing with a non-directional alternative hypothesis, and α = .01. Which of the following would be a critical value for the z-statistic?
A. +/– 1.64
B. +/– 1.96
C. +/– 2.33
D. +/– 2.58
23: If the decision has been made to reject the null hypothesis, we would say that ______.
A. The result is statistically significant
B. The result is non-significant
C. H0 is presumed to be true
D. No relationship exists among variables
24: You are interested in determining if an exercise program to improve cardiovascular fitness has any influence on flexibility. You want to conduct your test using α = .01. Which would be the appropriate critical value for the z-statistic?
A. +/– 1.64
B. +/– 1.96
C. +/– 2.33
D. +/– 2.58
25: If the decision has been made to not reject the null hypothesis, we would say that ______.
A. The result is statistically significant
B. The result is non-significant
C. H1 is presumed to be true
D. No assumption can be drawn
26: Which of the following would be typical of information provided by statistical software?
A. P < .05
B. P < .01
C. P = .03
D. N.s.
27: Increasing sample size tends to increase the likelihood of rejecting the null hypothesis.
A. True
B. False
28: If a researcher reports that “p < .05,” we assume that ______.
A. P is not less than .01
B. They have conducted a one-tailed test
C. They had a directional hypothesis
D. The null hypothesis is true
29: For which of the following would the t distribution most closely resemble the standard normal distribution?
A. N = 1
B. N = 10
C. N = 100
D. N = 1000
30: Robust is Ability of a statistical procedure to withstand moderate violations of the assumption of normality.
A. True
B. False
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Statistical Testing One Sample Mean MCQs
