prismofreality Posted May 16, 2013 Report Share Posted May 16, 2013 The fish in a lake have weights that are normally distributed with a mean of 1.3 kg and a standard deviation of 0.2 kg.a) determine the probability that a fish that is caught weighs less than 1.4 kg.I'm not sure how to even approach this problem. I don't know how to use the mean and the standard deviation to be able to gain at least a p value that i can use t do the binomial distribution. Reply Link to post Share on other sites More sharing options...
Rahul Posted May 16, 2013 Report Share Posted May 16, 2013 This isn't a binomial distribution question, because there are many outcomes! This isn't a discrete question either, because the weights of the fish vary infinitely. There is no discrete distribution - this is continuous. This is a question you'd use the normal distribution for!You want to find normalcdf from 0 to 1.4 of a curve with mean 1.3 and standard deviation 0.2.Plug this into your calculator as normalcdf(0,1.4,1.3,0.2), which evaluates to 0.6195, or 61.95%.I hope that helps. 2 Reply Link to post Share on other sites More sharing options...
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