t test and NHST

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Questions 14

Answers

1
The mean of a t distribution is always
The mean of the sample
0
1
The mean of the population
2
I did a 95% confidence interval on a paired samples design. It had a range of -12.05 to -7.22. This means
retain the null hypothesis
reject the null hypothesis
I could be making a Type II Error
I actually need more information
3
If I have SPSS output that reports a p-value of .047, I should
SPSS does not give p-values
Retain the null hypothesis
Worry about the Type II Error
Reject the null hypothesis
4
If sample size decreases, what happens to the t distribution?
It becomes more peaked
It becomes skewed
It flattens
It makes the critical values closer to the mean
5
When you have a t-obtained that is larger than the critical value for t:
The t has a probability less than alpha, if the null hypothesis is true
Both triangle and circle
Means you should reject the alternative hypothesis
Means you should reject the null hypothesis
6
We control the probability of making the Type I Error by setting the value of
beta
the mean of t
alpha
one or two tailed tests
7
Degree of freedom is most closely associated with
Mean score
Standard error
Variability
Sample size
8
NHST is about
Use sample statistics to establish the specific value of a pop. parameter
Showing that a population parameter corresponds to a sample statistic
Using sample data to tell whether the sample came from a hypothesized pop.
Use populations data to confirm that the sample came from the population
9
If I have a known population mean and I want to compare a sample to it, I should use
Paired samples t test
ANOVA
One sample t test
Independent samples t test
10
Suppose you make a decision to reject the null hypothesis. What could be occurring?
Type I Error
Both triangle and diamond
Type II Error
A Correct Decision
11
Which answer is most closely related to the concept of a two-tailed test of significance?
A divided rejection region
Null hypothesis of unequal means
Type II Error
Type I Error
12
Suppose I am comparing mean scores between random samples of criminal justice majors and psychology majors. I should
Use correlation
Use independent samples t
Use paired samples t
Use one-sample t
13
Suppose I measured customer satisfaction for the same sample of people at two points of time. I should use
Paired samples t test
One sample t test
MATHMATHMATHMATHMATHMATHMATHMATHMATHMATHMATHMATHMATHMATHMATH
Independent samples t test
14
As sample size increases, what happens to standard error?
There is no relationship between standard error and sample size
It increases
It decreases
It stays the same

t test and NHST Flashcards | StudBud

t test and NHST

14 termsStudBud Administration230 plays

Imported from external platform

Flashcards14 cardsFPractice quizPHost liveL

Questions 14

Answers

1
The mean of a t distribution is always
The mean of the sample
0
1
The mean of the population
2
I did a 95% confidence interval on a paired samples design. It had a range of -12.05 to -7.22. This means
retain the null hypothesis
reject the null hypothesis
I could be making a Type II Error
I actually need more information
3
If I have SPSS output that reports a p-value of .047, I should
SPSS does not give p-values
Retain the null hypothesis
Worry about the Type II Error
Reject the null hypothesis
4
If sample size decreases, what happens to the t distribution?
It becomes more peaked
It becomes skewed
It flattens
It makes the critical values closer to the mean
5
When you have a t-obtained that is larger than the critical value for t:
The t has a probability less than alpha, if the null hypothesis is true
Both triangle and circle
Means you should reject the alternative hypothesis
Means you should reject the null hypothesis
6
We control the probability of making the Type I Error by setting the value of
beta
the mean of t
alpha
one or two tailed tests
7
Degree of freedom is most closely associated with
Mean score
Standard error
Variability
Sample size
8
NHST is about
Use sample statistics to establish the specific value of a pop. parameter
Showing that a population parameter corresponds to a sample statistic
Using sample data to tell whether the sample came from a hypothesized pop.
Use populations data to confirm that the sample came from the population
9
If I have a known population mean and I want to compare a sample to it, I should use
Paired samples t test
ANOVA
One sample t test
Independent samples t test
10
Suppose you make a decision to reject the null hypothesis. What could be occurring?
Type I Error
Both triangle and diamond
Type II Error
A Correct Decision
11
Which answer is most closely related to the concept of a two-tailed test of significance?
A divided rejection region
Null hypothesis of unequal means
Type II Error
Type I Error
12
Suppose I am comparing mean scores between random samples of criminal justice majors and psychology majors. I should
Use correlation
Use independent samples t
Use paired samples t
Use one-sample t
13
Suppose I measured customer satisfaction for the same sample of people at two points of time. I should use
Paired samples t test
One sample t test
MATHMATHMATHMATHMATHMATHMATHMATHMATHMATHMATHMATHMATHMATHMATH
Independent samples t test
14
As sample size increases, what happens to standard error?
There is no relationship between standard error and sample size
It increases
It decreases
It stays the same