document.write( "Question 1176494: Use the normal distribution of SAT critical reading scores for which the mean is 515 and the standard deviation is 111. Assume the variable x is normally distributed.\r
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document.write( "(a) What percent of the SAT verbal scores are less that 600? (Round to two decimal places as needed)
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document.write( "(b) If 1000 SAT verbal scores are randomly selected, about how many would you expect to be greater than 525?\r
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Algebra.Com's Answer #803598 by Boreal(15235)![]() ![]() You can put this solution on YOUR website! z=(x-mean)/sd \n" ); document.write( "<(600-515)/111 \n" ); document.write( "<85/111 or 0.766 \n" ); document.write( "that probability is 0.7781 rounding the z at the end. \n" ); document.write( "- \n" ); document.write( "z>(10/111) or 0.090 \n" ); document.write( "probability is 0.4641, so 464 scores. \n" ); document.write( " |