4. Suppose 200 seventh-grade students were surveyed. How many can be expected to say that roller skating is their favorite hobby?​

Aclothing designer is selecting models to walk the runway for her fashion show. the clothes she designed require each model’s height to be no more than y inches from 5 feet 10 inches, or 70 inches. which graph could be used to determine the possible variance levels that would result in an acceptable height, x?