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You are not logged in. #1 20121212 03:33:55
Help on some Statistics and Probabilities questions please1. Based on data from Carmax.com, when a car is randomly selected the number of bumper stickers and the corresponding probabilities are: 0(0.824); 1(0.083); 2(0.039); 3(0.014); 4(0.273); 5(0.008); 6(0.008); 7(0.004); 8(0.004); 9(0.009) #2 20121212 03:48:35
Re: Help on some Statistics and Probabilities questions pleaseHi;
Two choices, true or false. d) The probability of getting 45 or more right by guessing. I would need to know your confidence interval to determine whether that is unusual or not. In mathematics, you don't understand things. You just get used to them. I have the result, but I do not yet know how to get it. All physicists, and a good many quite respectable mathematicians are contemptuous about proof. #4 20121212 03:59:22
Re: Help on some Statistics and Probabilities questions please3 a) b) I am getting c) There is almost an 11% chance that the mean of the 20 guys exceeds 3600 lbs, so I would say yes. In mathematics, you don't understand things. You just get used to them. I have the result, but I do not yet know how to get it. All physicists, and a good many quite respectable mathematicians are contemptuous about proof. #6 20121212 04:20:56
Re: Help on some Statistics and Probabilities questions pleaseHi; 2d This was done by computing this sum which gets the exact answer: Or you can use the Normal distribution to approximate the binomial. which is close to the exact answer. 1) a Do those numbers add up to 1? If they do we have a probability distribution. In mathematics, you don't understand things. You just get used to them. I have the result, but I do not yet know how to get it. All physicists, and a good many quite respectable mathematicians are contemptuous about proof. #8 20121212 04:37:11
Re: Help on some Statistics and Probabilities questions pleaseHi;
You should know how to get a mean and a standard deviation with a table of data. In mathematics, you don't understand things. You just get used to them. I have the result, but I do not yet know how to get it. All physicists, and a good many quite respectable mathematicians are contemptuous about proof. 