Confidence intervals lessons
6 animated step-by-step lessons (Statistics and probability). Build confidence intervals for a mean or a proportion.
Showing 1–6 of 6
- Video lesson1:00Statistics and probabilityCollege4 stepsA sample of 36 has mean 100; the population standard deviation is 15. Find the 95% confidence interval for the mean
Confidence intervals
- Video lesson1:00Statistics and probabilityCollege4 stepsA sample of 64 has mean 50; the population standard deviation is 8. Find the 90% confidence interval for the mean
Confidence intervals
- Video lesson1:00Statistics and probabilityCollege4 stepsA sample of 100 has mean 72; the population standard deviation is 12. Find the 99% confidence interval for the mean
Confidence intervals
- Video lesson1:10Statistics and probabilityCollege5 stepsIn a sample of 1000, 540 say yes. Find the 95% confidence interval for the proportion
Confidence intervals
- Video lesson1:12Statistics and probabilityCollege5 stepsA sample of 200 has a sample proportion of 0.42. Find the 99% confidence interval for the proportion
Confidence intervals
- Video lesson1:11Statistics and probabilityCollege5 stepsA sample of 400 has a sample proportion of 0.6. Find the 90% confidence interval for the proportion
Confidence intervals