For each of the following situations, calculate the \(t\)-statistic \((t)\) :

a. \(\mathrm{X}^{-}=12.00 ; \mu=10 ; s \mathrm{X}^{-}=2.00\)

b. \(X^{-}=6.00 ; \mu=9 ; s X^{-}=1.50\)

c. \(X^{-}=4.25 ; \mu=4.25 ; s X^{-}=.75\)

d. \(X^{-}=5.62 ; \mu=5.25 ; s X^{-}=.20\)

e. \(X^{-}=9.75 ; \mu=10.50 ; s X^{-}=1.08\)