The bell curve I am given is exactly the same as the one shown on the website listed below...

Questions

A.) About what percentage of the population falls within -1 and -2 standard deviations from the mean? I am not sure if the answer would be 47.7% (34.13 + 13.59) or just 13.59% because the wording of the question is confusing me.

B.) About what percentage of the population falls below -2 standard deviations from the mean? I think the answer is about 2.3% (.13 + 2.14) but I am not fully sure.

Any help is greatly appreciated, thank you for you time!