Probability without equally likely events | Probability and Statistics | Khan Academy

Up until now, we've looked at probabilities surrounding only equally likely events. What about probabilities when we don't have equally likely events? Say, we have unfair coins?

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[bnv]

Sal: teaching his heart out
Everyone: complimenting on his coin drawing
😂😂😂

[MageMasterOzero]

Hi, I was wondering what program/method you use for writing and solving your problems during your recordings. Thank you for all that you do!

[Awais_Khan_Tanoli]

Thanks for teaching so clearly you are amazing. Thank u sir :)

[yiqiyihuiy]

3:57 Good coin drawings 🎉Great explanation ❤

[zippy]

. Ever hear of probability comes after probably " Probably, But I don't know"

[Hashtag_Laser]

So the probability of getting two tails and one head with a coin that’s 60% likely to be heads is .40•.40•.60 or 9.6%?

[talhajubair]

i guess giving the example of a sandwich store where the customers buy a particular type of sandwich 60% of the time would have been a better idea

[GreatVgnc]

Sal, for your coin example I would suggest something like creating/imagining a 3 sided coin such that 2 of the sides are "tails" and the other side is "heads". I think that would visually help in explaining.

[RTRVII]

@kenufak or easier just remember that 90 percent = 0.9...
so it's 0.4*0.6*0.4 :)

[Unichab]

before i compelt the whole play list i thaaankkkk uuu so much god bless u khan academy in any field i wanted something i come here 😍

[Niecee]

Is possible or is there a vid that does exactly 'x' numbers of events given an unfair coin. So getting exactly 2 using an unfair coin?

[kenufak]

you can multiply percents
for example> 40%*60%*40% = 96 000 %^3 and now you must convert into rigt unit.
(96 000%^3)/(100%*100%) = (96 000 %^3)/10 000 %^2 = 9, 6 %

[MegaMan]

8:36 I don't understand how 0.096 is equal to 9.6?

[cathalinayee]

how would you do this with a fixed number of trials ?

[Kokoda]

Why do we multiply the two probabilities?

[MrJatinjanshali]

Sir you are amazing. Only one observation. You explain the multiplication of 0.6 *0.6 in the video which is not required. If a person learns probability then he must know multiplication

[chaimaeismaili]

I'm really happy because I finally understand this 🤭✨🌸

[craigmeyer]

I genuinely do not understand why we as humans need to know this because there is no such thing as an unfair coin

[akashaia]

Great explanation sir, thanks allot sir

[sarthakbobde]

Why he said 9.6% I thought it's 0.096