6 - Quiz 2 (Week 6) Saved Help The mean of a normal probability distribution is 200, the standard deviation is 10. Refer to the table in Appendix B.1. (Round the fin 10 answers to 2 decimal places.) a. About what percentage of the observations lie between 190 and 210? Percentage of observations % 8 01:41:26 b. About what percentage of the observations lie between 180 and 220? Percentage of observations % c. About what percentage of the observations lie between 170 and 230? Percentage of observations %