Question

Find $\sum_{i=10}^n (\sum_{r=10}^i \binom{30}{r}\binom{20}{r-10})$=?

score 60 · Answer 1 · 2026-03-25 03:04:08

60

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Find $\sum_{i=10}^n (\sum_{r=10}^i \binom{30}{r}\binom{20}{r-10})$=?

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126

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score 131 · Answer 5 · 2019-05-14 09:47:21

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score 668 · Answer 6 · 2019-05-15 17:46:24

668

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score 263 · Answer 7 · 2019-05-16 11:26:11

263

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26

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33

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301

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score 311 · Answer 11 · 2019-05-20 05:40:57

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score 3.2k · Answer 12 · 2019-05-20 16:20:52

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score 3k · Answer 13 · 2019-05-21 06:20:11

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score 160 · Answer 14 · 2019-05-22 00:08:32

160

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Published on 22 May 2019 - 0:08

score 75 · Answer 15 · 2019-05-22 15:55:16

75

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Published on 22 May 2019 - 15:55

List Question

Find $\sum_{i=10}^n (\sum_{r=10}^i \binom{30}{r}\binom{20}{r-10})$=?

Testing the probability of a Bernouilli variable

Expectation of the inverse of Binomial distribution

Simple Random Sample $X_1=x_1,X_2=x_2,...X_n=x_n$ taken with replacement, find maximum likelihood estimator for parameter $p$ of $X\sim Binomial(5,p)$

Computing the odds that max. $11$ items are late, if $132$ items are delivered with $96.2\%$ success rate per item. Why two methods give two results?

Proof that for a binomial distribution, varX = npq

Deriving the mean of the binomial distribution

binomial distribution problem prove or disprove

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How many times should the dice be rolled to maximise chance of winning? 0

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Calculating Probability of an event and its expected value over a large number of independent events

1st Yr Statistics Question: Create an approximate $\alpha$ level test of $H_0 : p_1 = p_2$

Product of binomial coefficients and interesting properties

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