Brainliest + points! any mathematicians out there? which statement is true of normally distributed data? a. approximately 90% of data falls within 2 standard deviations (±2) of the mean. b. approximately 90% of data falls within 3 standard deviations of (±3) the mean. c. approximately 95% of data falls within 2 standard deviations (±2) of the mean. d. approximately 95% of data falls within 3 standard deviations (±3) of the mean.