Question
Test scores on the
ACT exam are normally distributed with a mean of 211 and deviation of 4.8.
Using the 68-95-99.7 rule, find the percentage of ACT scores within 9.6 of the mean of 21.1, and 14.4 of the mean of 21.1
ACT exam are normally distributed with a mean of 211 and deviation of 4.8.
Using the 68-95-99.7 rule, find the percentage of ACT scores within 9.6 of the mean of 21.1, and 14.4 of the mean of 21.1
Answers
PsyDAG
Mean ± 2 SD = 95%
Mean ± 3 SD = 99.7%
Mean ± 3 SD = 99.7%