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anonymous
 one year ago
If the probability of hearing a "yes" to a campaign contribution drive is 0.07, and 250 requests are made, what is the probability of getting at least 20 positive responses?
anonymous
 one year ago
If the probability of hearing a "yes" to a campaign contribution drive is 0.07, and 250 requests are made, what is the probability of getting at least 20 positive responses?

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ybarrap
 one year ago
Best ResponseYou've already chosen the best response.0How are you thinking about solving this problem?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0honestly, I have no clue...

ybarrap
 one year ago
Best ResponseYou've already chosen the best response.0Have you heard about the Binomial Distribution? https://en.wikipedia.org/wiki/Binomial_distribution You will need this

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Okay, I think I got this now... kinda

ybarrap
 one year ago
Best ResponseYou've already chosen the best response.0Just tell me in a sentence, don't worry about the math

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Sentences in math, oi... its actually easy for write out the equation instead...Not quite sure about this but here is what I got (250/20)*(0.07)^20*(0.93^231)=0.846 Am I right or wrong?

ybarrap
 one year ago
Best ResponseYou've already chosen the best response.0You've got the flavor of it. We need to count all the ways of having more than 20 people out of 250. This is hard. Let's do something easier, let's count the number of ways to have LESS than 20 people. That's easier. That's our strategy.l In a sentence (or two).

ybarrap
 one year ago
Best ResponseYou've already chosen the best response.0Once we have the probability of less or equal 20, we will subtract this from 1 to get the probability of greater than 20.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Okay, let me try working something else out real quick

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0I checked with my teacher and she helped me work the problem but thanks for the help, you got me started so i could finish.
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