5. If your t-test value is t=1.45 and the critical value is CV=5.66, your data is: A.significant B.different not significantly different.
7. Why is the standard error of the mean used for the t-test and not the standard deviation?
a. because information about the sample is not known and using the SEM might create a biased result
b. because information about the population is known and using the SD might create a unbiased result
c. because information about the population is not known and using the SD might create a biased result
d. because information about the sample is not known and using the SD might create an unbiased result