document.write( "Question 977304: Question 1: A test has a mean of 30 and a standard deviation of five.\r
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document.write( " Jackie has scored in the 57th percentile.
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document.write( " Ethan has a T score of 70.
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document.write( " Lan has obtained a z score of –0.2.
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document.write( " Salvatore has received a raw score of 27.\r
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document.write( "On the basis of the information provided, answer the following questions:\r
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document.write( " Who has scored the highest?
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document.write( " Who has scored the lowest?\r
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document.write( "*I am completely lost on this question. Can anyone explain how to do it so I can complete the rest of the problems I have that are similar* Thank You!
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Algebra.Com's Answer #598836 by stanbon(75887) ![]() You can put this solution on YOUR website! Question 1: A test has a mean of 30 and a standard deviation of five. \n" ); document.write( "Comment:: Convert all the scores to z-scores. \n" ); document.write( "----------- \n" ); document.write( "Jackie has scored in the 57th percentile. \n" ); document.write( "z-score = invNorm(0.57) = 0.176 \n" ); document.write( "--------------------------------------- \n" ); document.write( "Ethan has a T score of 70. \n" ); document.write( "Comment:: Are you sure? That would be 70 standard deviations above the mean. \n" ); document.write( "--------------------- \n" ); document.write( "Lan has obtained a z score of –0.2. \n" ); document.write( "------------ \n" ); document.write( "Salvatore has received a raw score of 27. \n" ); document.write( "z(27) = (27-30)/5 = -3/5 = -0.6 \n" ); document.write( "---------------------------------- \n" ); document.write( "On the basis of the information provided, answer the following questions: \n" ); document.write( "Who has scored the highest? \n" ); document.write( "Excluding that \"T\"score, Jackie's score is highest. \n" ); document.write( "--------- \n" ); document.write( "Who has scored the lowest? \n" ); document.write( "Salvatore's is the lowest. \n" ); document.write( "------------------------------- \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( "------------- \n" ); document.write( " |