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Pulsified333
 one year ago
Suppose that you flip a coin 13 times. What is the probability that you achieve at least 5 tails?
Pulsified333
 one year ago
Suppose that you flip a coin 13 times. What is the probability that you achieve at least 5 tails?

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anonymous
 one year ago
Best ResponseYou've already chosen the best response.0thats a binomial probability problem

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0lol your math teacher must hate you

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0at least 5 means 5 or 6 or 7 or 8 or 9 or 10 or 11, or 12,or 13

Pulsified333
 one year ago
Best ResponseYou've already chosen the best response.0No he just gives us insane amounts of homework while the other teachers at the university give like half of what he gives us

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0you can compute the probability you get 0,1,2,3,4 and subtract that total from 1 it is still going to be a pain

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0\[P(x=0)=\left(\frac{1}{2}\right)^{13}\]

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0naw chill just use the formula of sumation

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0\[P(x=1)=13\left(\frac{1}{2}\right)^{13}\]

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0use you calculator to plug it into a summation

Pulsified333
 one year ago
Best ResponseYou've already chosen the best response.0haven't learned that formula yet

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0\[P(x=2)=\binom{13}{2}\left(\frac{1}{2}\right)^{13}\]

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0ok how about the nCr * p^r * q^(nr) ?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0ok now plug it in for the values 1, 2, 3, 4, 5 and add them then subtract that sum from 1

anonymous
 one year ago
Best ResponseYou've already chosen the best response.01, 2, 3, 4, 5 being your success rate

Pulsified333
 one year ago
Best ResponseYou've already chosen the best response.0but what does (13 2) mean?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.013 tries and there are only 2 possible outcomes

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0subtract this number from 1 http://www.wolframalpha.com/input/?i=%281%2B13%2B78%2B286+%2B715%29%2F2^%2813%29
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