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pakinam
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I throw darts repeatedly. Assume that on each single throw, my chance of hitting the bullseye is 10%, independently of all other throws. I decide to throw until I have hit the bullseye 3 times. What is the chance that I throw exactly 30 times?
 one year ago
 one year ago
pakinam Group Title
I throw darts repeatedly. Assume that on each single throw, my chance of hitting the bullseye is 10%, independently of all other throws. I decide to throw until I have hit the bullseye 3 times. What is the chance that I throw exactly 30 times?
 one year ago
 one year ago

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reemii Group TitleBest ResponseYou've already chosen the best response.2
you have this info: 30 throws, last throw is a BE (bullseye). P(BE)=0.1. But you don't know where the other two BE's are. So it's like that: (29 hits with 2BE's) and 1BE. Does this help?
 one year ago

reemii Group TitleBest ResponseYou've already chosen the best response.2
you have to use a combintation "C(n,k)" factor in the computation of the probability of (29 throws with 2 BE's), then multiply by P(1BE).
 one year ago

sarah10 Group TitleBest ResponseYou've already chosen the best response.0
is the ans 40.6
 one year ago

reemii Group TitleBest ResponseYou've already chosen the best response.2
No, the answer must be a number of [0,1]. but it should be \(P(\text{2 BE's in 29 throws})\times P(\text{1 BE}) = \binom{29}{2}0.1^{2}\,0.9^{27} \times 0.1\). I got 0.02360879322323428... as anwer.
 one year ago

sarah10 Group TitleBest ResponseYou've already chosen the best response.0
is it the right ans ..... actually in frst attempt i got the the wrong ans
 one year ago

reemii Group TitleBest ResponseYou've already chosen the best response.2
it's right.
 one year ago

sarah10 Group TitleBest ResponseYou've already chosen the best response.0
thank you soooo much 4 helping me
 one year ago

pakinam Group TitleBest ResponseYou've already chosen the best response.0
0.0236 is wrong
 one year ago

reemii Group TitleBest ResponseYou've already chosen the best response.2
what's your answer ?
 one year ago

pakinam Group TitleBest ResponseYou've already chosen the best response.0
i got wrong when i entered this answer
 one year ago

Khlara Group TitleBest ResponseYou've already chosen the best response.0
@pakinam i gt it correct
 one year ago
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