Confidence intervals for the difference between two proportions | AP Statistics | Khan Academy

Introducing two-sample z intervals to estimate the difference between two population proportions.

AP Statistics on Khan Academy: Meet one of our writers for AP¨_ Statistics, Jeff. A former high school teacher for 10 years in Kalamazoo, Michigan, Jeff taught Algebra 1, Geometry, Algebra 2, Introductory Statistics, and AP¨_ Statistics. Today he's hard at work creating new exercises and articles for AP¨_ Statistics.

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[karannchew]

2:41 standard deviation of the sampling distribution of the sample proportions

6:00 standard deviation of the sampling distribution of the difference between the sample proportions

6:33 standard deviation of the sampling distribution of the difference between the sample proportions

7:46 the variance of the sampling distribution for the sample proportion of the first population (or of the first group, p1)

8:00 the variance of the sampling distribution for the sample proportion of the second population (or of the second group, p2)

[sumkipkurgat]

thank you very much. still refer to this everydaty

[henriettagibsonii]

Should be step by step no jumping from Billy to Jack, just the formula and plug the data in, much easier to follow.

[waltsanders]

Wow, we just today started learning this in AP stat

[oskarowen]

How long where you in school for? Did you get principals award and the the best grades in you’re math class.

[moart]

So this is how all those A/B-calculators on the internet work?

[ayeshaqureshi]

Sir kindly upload latest videos for 10nth class

[aytys]

A=2r+z^2 B=z*sqr(z^2+4rq) C=2(n+z^2)
Lower bound= (A-B)/C
Upper bound =(A+B)/C
Is better for making confidence intervals on a proportion!
What you showed dosent work for many datasets we would encounter in real life!

[BarbaraGonzalez-lv]

Miller Christopher Robinson Angela Miller Michael