My Math Forum Discrete Probability Distributions

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 February 21st, 2016, 01:45 PM #2 Global Moderator   Joined: May 2007 Posts: 6,807 Thanks: 717 The description is extra wordy. The probability is given by a binomial distribution. The probability that exactly k will be ready is $\displaystyle P_k=\binom {16}{k}0.7^k*0.3^{16-k}$. You want $\displaystyle \sum_{k=12}^{16}P_k$. Thanks from Ore0Kidd
 February 21st, 2016, 03:23 PM #3 Newbie   Joined: Feb 2016 From: Illinois Posts: 8 Thanks: 0 Thank you for the quick reply. It wants me to develop the distribution in this form: X | P(x) 0 | 1 | 2 | 3 | 4 | So how would I get started doing that?
February 21st, 2016, 06:45 PM   #4
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Quote:
 Originally Posted by Ore0Kidd Thank you for the quick reply. It wants me to develop the distribution in this form: X | P(x) 0 | 1 | 2 | 3 | 4 | So how would I get started doing that?
Plug in mathman's formula for each of these values...

February 21st, 2016, 06:51 PM   #5
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Quote:
 Originally Posted by 123qwerty Plug in mathman's formula for each of these values...
I'm not sure how to exactly plug them in. Could you show me one example to get me started? Thank you for your reply.

Sorry for my math stupidity, lol.

February 21st, 2016, 10:50 PM   #6
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 Originally Posted by Ore0Kidd I'm not sure how to exactly plug them in. Could you show me one example to get me started? Thank you for your reply. Sorry for my math stupidity, lol.
For example, in the '0' column, plug in k = 0 into the first formula provided by mathman.

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