Use the table to find the value that is three standard deviations above and below the mean. (Enter exact numbers as integers, fractions, or decimals.) Baseball Player Batting Average Team Batting Average Team Standard Deviation Fredo 0.158 0.146 0.012 Karl 0.177 0.169 0.015 (a) above the mean Fredo's Team 0.202 X Karl's Team 0.204 X (b) below the mean Fredo's Team 0.130 X Karl's Team 0.144 X To find a value that is three standard deviations above or below the mean, what is added to or subtracted from the mean