Calculating Probability - " And " statements, Dependent

Calculating Probability - " And " statements, Dependent Events.
The basic idea and one complete example is shown!
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Category:

Education

Tags:

• algebra
• finite
• probability
• simple
• events
• and
• or
• conjunction
• multiplication
• principle
• justmathtutoring.com
• dependent

[Jarrodmontelius]

patrick you are my 105 mathamatics teacher. Since my real one sucks lol, ty your style of teaching is very easy to follow.

[patrickJMT]

@Jarrodmontelius ha, hope it is going well!

[Darkfox107]

Thank you so much. this helped a lot.

[patrickJMT]

wonderful, glad to help

[eddsson]

Thanks, was just thinking about that and youtube to the rescue. As always.

Though, you got it all mixed up. It's obviously blue/red rings of some sort! Hehe.

[patrickJMT]

ops! i got confused!! : )

[MattRadioheadhead]

Yes, your country is a leading intellectual nation.

[blackha368]

If you do not draw a blue marble on the 1st try, the probability of drawing 2 blue marbles becomes 0. That is why you assume you are successful the 1st time when finding the probability.

[112233mode]

i have question teacher :)

ok y did u say at the probability of pick red ball it is 9/19 why u didnt say it is 10/19 ??

becoz if he is gonna pick a blue one so the remaings will be 10 red and 9 blue and the total will be 19 so the probability of getting a red one will be 10/19

thx i hope u answer asap :)

[ss121ss121]

شكراً

thank you

[EMINEM6890]

THNX again!  :)

[buttercup6vic]

so I have a question....what do i do when i have three events that are dependent on each other? ie i have S: 10 red marbles and 6 blue marbles so what is the probability that I get 1 red and 2 blue marbles if i select three marbles randomly?

I worked out first taking a red , then a blue with the reduced total sample space and finally a second blue with reduced blue and reduced total sample space. but then this could happen in 3 sequences, do i * the results together or + results?

[007myzorro]

Yes definitely, the united states of america is a great intellectual nation that i admire and this is for a great part due to people like you patrick and this compensates the excesses of that nation. Do so further please. Bernard. Belgium. (my english is what it is, sorry but i speak with my heart and heart langage is universal..).

[007myzorro]

merci beaucoup de votre dévouement et de la consatnce avec laquelle vous enseignez les maths, cette branche si importante!!!. on se sent bien quand on vous écoute!!  bernard from little belgium

[nooshin159]

wow.. i wish u were my teacher..i would love learning things from u :D ur videoes were of great help to me.. keep it up :)

[rippertimmy3491]

I don't know if this means anything to you, but you are a 100 times better than my UCLA math professor.