When consideringa two-samplest-test, which of the following statements is INCORRECT about independent and correlated groups?

a.Independent groups are more likely to have smaller standard error,which will increase power

b.Independent groups indicate that there are two separate groups of participants

c.When we have a few outliers,it would be better to run a correlatedt-testto minimize their effects

d.If the same group of participants were measured at two different times,we used correlated groups