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May 12th, 2017, 10:27 AM  #1 
Senior Member Joined: Oct 2013 From: New York, USA Posts: 595 Thanks: 81  Is There A Website That Can Do These Probabilities?
At Binomial Calculator I can input a probability and amount of trials to find the probability of any specific amount of successes. Is there a website that can let me input a percentage of successes rather than an amount? For example, is there a website that can tell me the probability of at least 45 percent heads and at least 45 percent tails if I flip 76 coins.

May 17th, 2017, 03:22 AM  #2 
Math Team Joined: Jan 2015 From: Alabama Posts: 3,103 Thanks: 850 
Can't you just use a calculator to multiply .45* 76 and then use that website?

May 23rd, 2017, 02:30 AM  #3 
Senior Member Joined: Dec 2012 From: Hong Kong Posts: 853 Thanks: 311 Math Focus: Stochastic processes, statistical inference, data mining, computational linguistics 
You should probably learn to use the pbinom function in R as well. It's much more convenient than using a website and in the long run you want to know R anyway...


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