In predicting the score onYfrom a given score onX, we report that 68% of the time, the actual values onYfor people with the givenXscore will fall within what values?

a. +or1 standard deviation around the mean ofY

b. +or1 standard error of prediction around the mean ofY

c. + or1 standard deviation around the predicted score onY

d. + or1 standard error of prediction around the predicted score onY