Seventy 5 percent of 6th graders attend school in a particular urban district. If a sample of 450 6th grade children is selected.
1. Find the probability that at least 290 are actually enrolled in the school
2. Find the probability that less than 300 are actually enrolled in the school.
3. Find the probability that more than 280 are actually enrolled in the school.

Answer rating: 100% (QA)

Convert this to a normal approximation npmean or 4505 or 22... View the full answer