URGENT HELP !! PROBABILITY trials 2moro :( (1 Viewer)

[sir-study-alot]

hi guys who knows how to do this question:

the ratio of heads to tails when a biased coin is tossed : 5/7

prob of getting atleast one head?


can someone help thanks

 

[Lebosouljah]

hi guys who knows how to do this question:

the ratio of heads to tails when a biased coin is tossed : 5/7

prob of getting atleast one head?


can someone help thanks

very difficult question, i think u posted in wrong section, this looks to me like its 4unit

 

[sir-study-alot]

wanna know something funny its gernal .

 

[Prashant Sallan]

is that the full question??

 

[jessicalysenko]

at least one head out of how many tosses?

 

[sir-study-alot]

two . sorry .

 

[rowdyroddy]

hmm an interesting question, i do general also
do you have a worked solution or anything for this/these types of questions in probability?

 

[sir-study-alot]

the answer is 95/144

 

[Top Secret]

Since ratio of heads to tails is 5:7...
Then in 12 tosses, 5 will be heads, and 7 will be tails.

Therefore:
Prob. of head: 5/12
Prob. of tail: 7/12

Prob. of tossing NO heads in two tosses:
(Prob. of tail) x (Prob. of tail)
= (7/12) x (7/12)
= 49 / 144

So prob. of at least one head = Total prob. - prob. of no heads
= 1 - (49 / 144)
= 95 / 144

 

[sir-study-alot]

thanks heaps.

 

[Lebosouljah]

no worries sir wankalot

 

[Top Secret]

thanks heaps.

Here to help.

 

[sir-study-alot]

haha. shutup lebosouljagirl your a joke . go and full sick fuck off to your wrx and eat a kebab.

 

[samirs_maxin]

haha. shutup lebosouljagirl your a joke . go and full sick fuck off to your wrx and eat a kebab.

sir study alot shud prob have a cry for bein such a douche hahaha mf