Simple hypothesis testing | Probability and Statistics | Khan Academy

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Probability and statistics on Khan Academy: We dare you to go through a day in which you never consider or use probability. Did you check the weather forecast? Busted! Did you decide to go through the drive through lane vs walk in? Busted again! We are constantly creating hypotheses, making predictions, testing, and analyzing. Our lives are full of probabilities! Statistics is related to probability because much of the data we use when determining probable outcomes comes from our understanding of statistics. In these tutorials, we will cover a range of topics, some which include: independent events, dependent probability, combinatorics, hypothesis testing, descriptive statistics, random variables, probability distributions, regression, and inferential statistics. So buckle up and hop on for a wild ride. We bet you're going to be challenged AND love it!

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[asmomair]

I have been fighting very very hard to understand the reason behind rejecting the null hypothesis even though I went through all those lectures explaining the process of deciding significance level, p values etc almost thousand times! But O my God, all this time I was missing a simple trick here which Mr.Sal explained so intuitively! Oh Sal I am forever in deep love with you! You have made my life so enjoyable and my quest for knowledge so easily reachable! May Allah bless you and your family! (This video and the video the idea behind hypothesis testing combined gave me absolute peace about why we reject extremely low probability or low p values which I have been grappling hard for last one month to understand) Almighty has given a thorough intuition over human psychology and you explain things so beautifully!!! Just absolute zapper!! So much love and respect from Bangladesh❤️💕

[Hooyahfish]

Im on your actual website learning this topic and I just wanted to come on here to thank you for everything you guys do. I am learning much more on your videos than my stat professor.

[upstandingj]

This video actually just covers probability, and the multiplicative law of probability of consecutive independent events. It does not hypothesis testing as the title says.

[YaraMel]

this made me smile so much. Got quite interested now.

[everything_strength]

That smile on Bill's face is hilarious. :)

[SuperYtc]

What's the probability that the youngest sibling is picked 12 times in a row?








Answer: 100%

[castrolkainda]

Khan is really one of my favorite YouTube Guide. Thanks guys..❤❤

[navaneethalakshmimavooru]

excellent analogy sir. Hats off to your teaching skills

[hanji]

:^) i havent studied for my finals this is my last resort

[SAtIshKumar-qtwx]

till now i didn't understand why we reject or fail to reject null hypothesis when p value is low or high .. but now it got cleared. happy for the day. thanks

[KritiSaini]

I knew from that start that something is fishy with the Bill. That smirky smile :D Thank you for the explanation :)

[PallasAndDove]

Best part is when the others get suspicious of Bill and their expressions change!!

[AshishSingh-sygn]

Can we use 1- 1/64 for finding the probability of bill not getting picked three times in a row

[sarthakgiri]

when will I get a teacher like you in my class? Never man!! Respect from Nepal

[emalyncortez]

What is the relationship of probability to hypothesis testing?

[warpiwarpi]

Thanks for great video! However, at 3:07 Sal says that he will round to nearest hundredth but at 3:12, Sal says and writes equal to but it shall be approximately to ~ since it is rounded.

[domination]

rejecting the hypothesis now means no matter what bill say they going to think it is not by chance..poor bill

[greenplay.studio]

What an explanation man! Thanks a lot!

[prashanthmathi]

Bill already looked suspicious from the start :D

Look at his eyebrows!

[juanpablohermosillobecerra]

Eso no es prueba de hipótesis simple; una prueba de hipótesis simple es un ejercicio de estadística inferencial y el vídeo es acerca de probabilidad. Dos cosas distintas...