Overview
Trial Lesson
SAT Math
SAT Math Private Lessons
SAT Math Notes
SAT Math Formulas
SAT Practice Tests
SAT Math Tips and Info
Math Worksheets
Payment
We're also on social media for math tips and practice!
AP Statistics Notes
Confidence Intervals and Hypothesis Tests
One sample for mean µ when σ is known
Confidence interval
Test Statistic
Conditions
SRS
Value of population standard deviation σ is given
Population distribution is normal (or use CLT if n > 30)
One sample for mean µ when σ is unknown
✕