document.write( "Question 1183992: Scores for a particular standardized test are normally distributed with a mean of 80 and a
\n" ); document.write( "standard deviation of 14. Find the probability that a randomly chosen score is
\n" ); document.write( "i. No greater than 70
\n" ); document.write( "ii. At least 95
\n" ); document.write( "iii. Between 70 and 95
\n" ); document.write( "iv. A student was told that her percentile score on this exam is 72%. Approximately
\n" ); document.write( "what is her raw score? \n" ); document.write( "
Algebra.Com's Answer #814530 by Edwin McCravy(20054)\"\" \"About 
You can put this solution on YOUR website!
i. No greater than 70
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\r\n" );
document.write( "On your TI-84, \r\n" );
document.write( "press 2ND \r\n" );
document.write( "press VARS\r\n" );
document.write( "press 2\r\n" );
document.write( "\r\n" );
document.write( "Make the screen read: \r\n" );
document.write( "\r\n" );
document.write( "    normalcdf\r\n" );
document.write( "lower:-9999999\r\n" );
document.write( "upper:70\r\n" );
document.write( "μ:80\r\n" );
document.write( "σ:14       \r\n" );
document.write( "Paste\r\n" );
document.write( "\r\n" );
document.write( "Scroll down with the down arrow to Paste\r\n" );
document.write( "\r\n" );
document.write( "Press ENTER\r\n" );
document.write( "\r\n" );
document.write( "Read on the screen\r\n" );
document.write( "\r\n" );
document.write( "normalcdf(-9999999,70,80,14)\r\n" );
document.write( "\r\n" );
document.write( "Press ENTER\r\n" );
document.write( "\r\n" );
document.write( "Read 0.2375251875 round to 0.2375\r\n" );
document.write( "\r\n" );
document.write( "--------------------------------------------
\r
\n" ); document.write( "\n" ); document.write( "ii. At least 95
\r\n" );
document.write( "Same as above except\r\n" );
document.write( "lower:95\r\n" );
document.write( "upper:99999999      \r\n" );
document.write( "\r\n" );
document.write( "Read 0.1419884174 round to 0.1420\r\n" );
document.write( "\r\n" );
document.write( "--------------------------------------------

\n" ); document.write( "iii. Between 70 and 95
\r\n" );
document.write( "Same as above except\r\n" );
document.write( "lower:70\r\n" );
document.write( "upper:95\r\n" );
document.write( "\r\n" );
document.write( "--------------------------------------------

\n" ); document.write( "iv. A student was told that her percentile score on this exam is 72%. Approximately
\n" ); document.write( "what is her raw score?
\r\n" );
document.write( "On your TI-84, \r\n" );
document.write( "press 2ND \r\n" );
document.write( "press VARS\r\n" );
document.write( "press 3\r\n" );
document.write( "\r\n" );
document.write( "Make the screen read: \r\n" );
document.write( "\r\n" );
document.write( "     invnorm\r\n" );
document.write( "area:0.72\r\n" );
document.write( "μ:80\r\n" );
document.write( "σ:14       \r\n" );
document.write( "Paste\r\n" );
document.write( "\r\n" );
document.write( "Scroll down with the down arrow to Paste\r\n" );
document.write( "\r\n" );
document.write( "Press ENTER\r\n" );
document.write( "\r\n" );
document.write( "Read on the screen\r\n" );
document.write( "\r\n" );
document.write( "invNorm(0.72,80,14)\r\n" );
document.write( "\r\n" );
document.write( "Press ENTER\r\n" );
document.write( "\r\n" );
document.write( "Read 88.15978103  Round to 88.16 or as your teacher tells you.\r\n" );
document.write( "\r\n" );
document.write( "Edwin
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