Texas Education Agency
Texas Gateway: Tea Statistics: Confidence Intervals: Practice
A large collection of practice problems on confidence intervals.
Illustrative Mathematics
Illustrative Mathematics: S Ic Block Scheduling
A random sample of 100 learners from a specific high school resulted in 45% of them favoring a plan to implement block scheduling. Is it plausible that a majority of the students in the school actually favor the block schedule? Learners...
CK-12 Foundation
Ck 12: Statistics: Confidence Intervals
[Free Registration/Login may be required to access all resource tools.] This Concept introduces students to using and interpreting confidence intervals.