After conducting a one-sample Z-test, you arrived at a value of -12.5 for the z value. What is your conclusion? correct answers Reject the null hypothesis
In the statement z=3.14, p<.05, which of the following interpretations is true? correct answers There is a significant difference between ...
HIM 505 Midterm 2 || very Flawless.
After conducting a one-sample Z-test, you arrived at a value of -12.5 for the z value. What is
your conclusion? correct answers Reject the null hypothesis
In the statement z=3.14, p<.05, which of the following interpretations is true? correct answers
There is a significant difference between the sample value and the population.
In z=2.56, p<.05, what is the obtained value? correct answers 2.56
After conducting a one-sample Z-test, you arrived at a value of 5.7 for the z value. What is your
conclusion? correct answers Reject the null hypothesis
If you have a population standard deviation of 18 and a sample size of 9, what is your standard
error of the mean? correct answers 2
If you have a population standard deviation of 7 and a sample size of 100, what is your standard
error of the mean? correct answers 0.7
If your sample mean is 20, your population average is 10, and your standard error of the mean is
2, what is your observed z value? correct answers 5
If our sample selection was perfect, what would be the difference between the sample and
population averages? correct answers Zero
The one-sample Z-test is used to compare the _____ to the _____. correct answers Mean of a
sample, mean of a population
In a one-sample Z-test, this is the number of groups being compared: correct answers 1
If you have a population standard deviation of 10 and a sample size of 4, what is your standard
error of the mean? correct answers 5
If the obtained value is higher than the critical value, we correct answers Reject the null
hypothesis
If your sample mean is 30, your population average is 10, and your standard error of the mean is
5, what is your observed z value? correct answers 4
Which major assumption of the t-test deals with the amount of variability in each group? correct
answers Variances are equal
In the t-test for independent samples, the actual statistical test is... correct answers
Nondirectional
, In order to compute the test statistic or t value, you must first approximate the sample size by
calculating the... correct answers Degrees of freedom
If the obtained value is less than the critical value, what should you do? correct answers Accept
the null hypothesis
Imagine you are looking up a critical t value in a t table. If your observed t value for the degrees
of freedom lies between two critical values in the table, to be conservative, you would select...
correct answers The smaller value
The t-test for independent means is used when you are looking at the difference in average scores
of one or more variables within/between ____ group(s) that are _____ of one another. correct
answers Two, independent
What is considered to be a small effect for Cohen's d? correct answers .17
A researcher wants to create an intervention to improve the well-being of first-semester graduate
students, so she gives the professional-school-counseling students specific doses of rocky road
ice cream and mental-health-counseling students specific doses of licorice. To analyze the
differences in well-being, she would use a(n).... correct answers Independent samples t-test
If you want to examine the difference among the average scores of three unrelated groups, which
of the following statistical techniques should you select? correct answers Analysis of variance
If there is no difference between the distributions of scores in two groups, your effect size will be
equal to correct answers 0
If the number of participants in Group 1 = 32 and the number in Group 2 = 30, what is the
associated degrees of freedom? correct answers 60
If the number of participants in Group 1 = 54 and the number in Group 2 = 58, what is the
associated degrees of freedom? correct answers 110
Effect size is the measure of how different two groups are from one another in their magnitude.
correct answers True
The sample size is not taken into account when computing the effect size. correct answers True
Heterogeneity of variances is the assumption that the amount of variability in each of the two
groups is equal. correct answers False
The level of risk is set by the research in the significance testing. correct answers True
A t-test may be conducted to detect differences between two groups in which participants are
only tested once. correct answers True
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