Question

6. What are the three bits of information that the t table needs in order to use it?

10. a. Perform a test with the following scores: Population mean = 94, M=100 and the SEM=7.
b. Consult the t table to obtain a critical value for the outcome using an alpha level of α=.05, for a two tailed test and with a degree of freedom of df=7.
c. Would the t value you got be significant if doing a true test?

12. What are the three parts of the t test (or any statistical test) that you need to report when using APA standards?

16. a. If the degrees of freedom for the one sample t test was listed as df=14. How many participants were in the study?
b. How many degrees are free to vary in any one group?

Answer 1

6. What are the three bits of information that the t table needs in order to use it?

alpha level , one or two tailed test and degree of freedom ( df).

10. a. Perform a test with the following scores: Population mean = 94, M=100 and the SEM=7.

t =(100-94)/7 =0.8571

b. Consult the t table to obtain a critical value for the outcome using an alpha level of α=.05, for a two tailed test and with a degree of freedom of df=7.

critical value =2.365

c. Would the t value you got be significant if doing a true test?

Since the calculated t=0.8571 < critical value 2.365, Ho is not rejected. The test is not significant.

12. What are the three parts of the t test (or any statistical test) that you need to report when using APA standards?

t value, degrees of freedom and P value.

16. a. If the degrees of freedom for the one sample t test was listed as df=14. How many participants were in the study?

When df=14, then participants in the study( sample size n) = 15
b. How many degrees are free to vary in any one group?

In one group with sample size of n , (n-1) degrees are free to vary in that group.