document.write( "Question 955360: i just need someone to check and see if these Probability and Statistics questions are right .....
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document.write( "A. Jose spins the spinner 8 times. In those 8 spins, the arrow never lands on 3. Based on this information, is the spinner unfair? Explain.
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document.write( "Well there only one number 3 so that will be (1/4) that equals 25% the spinner together equals 100% so if the spinner is spin 8 times and doesn't land on a 3 he should be concerned.
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document.write( "Jose spins the spinner 500 times. In those 500 spins, the arrow lands on 3 a total of 42 times. Based on this information, should Jose be concerned that the spinner is unfair? Explain.Yes the spinner is begin unfair again he has a 25% chance to get the 3 if you multiply 25% by 500 you get 125 if you divide 125 by 500 it equals 25% again so if 42/500 equals 8.4% you know something has to be wrong
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Algebra.Com's Answer #583576 by Fombitz(32388)![]() ![]() You can put this solution on YOUR website! Well this is a more complicated question than it may seem. \n" ); document.write( "The laws of probability are based on observations whose number is very large or actually as the number of observations approaches infinity. \n" ); document.write( "So on the one hand, you should be concerned that you get 0/8 to land on 3. \n" ); document.write( "However, 42/500 land on 3 so your ratio has improved. \n" ); document.write( "It's not near 125 but it's also not 0. \n" ); document.write( "If it remained at 0, you would begin to be concerned and rightly so. \n" ); document.write( "Perhaps if you did 5000, you would be less concerned as the ratio improved and got closer to 1/4 of the observations. \n" ); document.write( "So at this point I don't think you have enough information to determine that the spinner is unfair. \n" ); document.write( " \n" ); document.write( " |