A sample has a mean of 120 and a standard deviation of 20.0. Find the value x that corresponds to each of these standard scores. Use the following formula:
If z = (x - mean)/st.dev; then x = (z)(st.dev) + mean
a. z = 0.0b
b. z = 1.2c
c. z = -1.4d
d. z = 2.05