Test Statistic For Means and Population Proportions

This statistics video tutorial provides the formulas for calculating the test statistic for the population mean and population proportion. This includes the z-statistic and t-statistic.

Find The Z-Score Given Confidence Interval:

Student's T-Distribution:

Hypothesis Testing - Null & Alternative:

Type I and Type II Errors:

One Tailed and Two Tailed Tests:

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Test Static For Means & Pop Proportions:

Hypothesis Testing Problems:

P-Value Method - Hypothesis Testing:

Hypothesis Testing - Proportions:

Difference of 2 Means - H Testing:

Cohen's D - Pooled Standard Deviation:

Hypothesis Testing - 2 Proportions:

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Matched or Paired Samples t-Test:

Chi Square Test:

Chi Square Distribution Test:

Test of Independence - Chi Square Dist:

Final Exams and Video Playlists:

Full-Length Videos and Worksheets:

[chitandaeru]

Whoever is making these videos, God bless them. What I couldn't learn in a classroom, I could learn from a stranger on the internet. Blessed.

[TimeQuxxn]

Literally learned this in my 8 am today and I was so confused. A literal blessing that you posted this a few hours later!!! You should do the next section too <3

[elodiegradlife]

1:17 let's say we're dealing with a 95% confidence level, you can use the standard z table to get the critical value
to decide whether you would accept or reject the null hypothesis you need to get another z value, a calculated z value, and compare it to critical value
1:58 if Zc is to the right of z, then that means you should reject the null hypothesis

[abby]

Happy teacher's day, The Organic Chemistry Tutor!!! :)))

[chelecovers]

You. Have. Saved. My. Whole. Life.

I can never thank you enough. wow.

[gracesmyth]

You just saved me from failing my stats test. Thank you!!

[llaaaza]

Guys, the values he is using are just arbitrary numbers to explain the work. Don’t get stuck on where it came from. It’s just an example.

[codeguy]

Sir plz tell how to watch your organic chemistry lectures in order. In playlist also there are many organic chemistry which to watch

[stpps]

im trying to get 1.96 on the Z table but it doesnt match up?

[moodyabushaqra]

Hello sir I love your videos thank you so much, can you please do Quantum mechanics I need it, I love the way you explain the material thank you!!

[alexiscrause]

Hi Sir, your videos are an absolute saving grace! Thank you. I wanted to ask if there will ever be an instance whereby we are dealing with proportions and n<30 hence would have to use a t-test? If so what is the formula for t calculated?

[RaulSouzaw]

I love this channel, help me a lot, thanks a lot !!!!

[Lakostus]

I love you so much ❤️❤️❤️ thaaaank youuu

[amarmata]

How are you typing in the number on calculator, I'm getting a bunch of zrtos

[LabibHasanBayzid]

P - cap = sample proportion
P = population proportion

[Jupiter]

The normal distribution curve is one of the most important things to know.

[weljohnplayz]

Is it true that if n>30 and the Population standard deviation is UNKOWN, in this case use the T-Distribution?

[DanielDuhon]

So what the heck is p^ and how is it different than p?

[atod]

But what does q stand for? And is it capital P or small p ?

[jessiemayfield]

Ok but my questions don’t have the confidence level, they’re like =\not= at a=#