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Hi there--I know I've posted a lot of stats questions, but I'm still majorly confused about...

Hi there--I know I've posted a lot of stats questions, but I'm still majorly confused about this one problem. It asks... An experiment was done to measure the ability of someone to predict which card out of 5 would be chosen at random. 100 trials were conducted and the test subject predicted the correct card in 25 of the trials. What exactly is the null hypothesis of this? Is it that choosing the right card is unrelated to the number of trials or is it that the number of cards have no effect on correct answers? I've had some people explain other areas of this question but I don't know if I'm writing this part correctly. I know it gets rejected based on calculation with p values, but am not sure what to write for the null hypothesis or a conclusion. I also find it strange that it gets rejected with this small of a difference. It's only 5 more correct?!?

math   Statistics-And-Probability   
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