Question

Some IQ tests are standardized to a Normal model, with a mean of 100 and a standard deviation of 15.

1. In what interval would you expect the central 95% of IQ scores to be found?
2. About what % of people should have IQ scores above 115
3. About what % of people should have IQ scores between 70 and 85?
4. about what % of people should have IQ scores above 130?
5. draw a model for these IQ scores. Clearly label it, showing what the 68-95-99.7 Rule predicts.