Test 3

Question 1

What would the degrees of freedom be in a single sample t test with a sample of 10 participants?

Answer 1

9

Question 2

Number the steps in order to complete a single sample t test?

Answer 2

Hypothesis, Degrees of freedom, estimated population standard deviation, estimated standard error of the mean, t obtained, effect size if significant, apa results section

Question 3

A related samples t-test is also known as what?

Answer 3

Paired matched dependent

Question 4

What is the critical value for a one tailed t-test in the negative direction with 5 as the degrees of freedom

Answer 4

-2.015

Question 5

What are the critical values for a two tiled t-test with 2 as the degrees of freedom?

Answer 5

+-4.303

Question 6

To calculate the degrees of freedom for an independent samples t-test, you must use which formula?

Answer 6

n-2

Question 7

If there are 8 participants who serve in both the control and experiment conditions in a related samples t-test, what would be the degrees of freedom?

Answer 7

7

Question 8

A study is conducted in which participants are randomly assigned to either a control or experimental group. What would be the appropriate analysis in this case?

Answer 8

Independent samples t-test

Question 9

What is the difference between a single sample t test and the inferential z test?

Answer 9

Only get population mean, not population standard deviation

Question 10

In an independent samples t-test with 20 participants randomly assigned to each group, the degrees of freedom would be what?

Answer 10

38

Question 11

When is a single sample t-test used?

Answer 11

When you get the population mean and not the population standard deviation.

Question 12

What would be the degrees of freedom used to find the critical value in the t-table for an independent samples t-test with an N of 19.

Answer 12

17

Question 13

A school administrator is interested in whether students test performance on a standardized test exceeds the national average. Assume that the national average on this test is 80, but the standard deviation is NOT known. The researcher randomly selects a sample of students from the school to compare to the national average. What would be the appropriate statistical test?

Answer 13

Single sample t-test

Question 14

What must you use to run a related samples t test on SPSS?

Answer 14

Paired samples t-test

Question 15

A researcher is investigating the effects of a distracter task on the ability to remember words. All participants perform a word memory task, and then their siblings perform the same task. The appropriate analysis in the example would be…

Answer 15

Related samples t-test

Question 16

When is a one tailed test used?

Answer 16

When we have a strong prediction of outcome