document.write( "Question 202384: A standarduzes test has a mean score of 100 and a standard deviation of 15.\r
\n" ); document.write( "\n" ); document.write( "a. what percentage of people score between 70 and 85 ?
\n" ); document.write( "b. what percentage of people score between 100 and 115?
\n" ); document.write( "

Algebra.Com's Answer #152611 by Theo(13342)\"\" \"About 
You can put this solution on YOUR website!
to answer this question, it helps to have a graphing calculator, or to have an online calculator.
\n" ); document.write( "the online calculator I used is at this web address.
\n" ); document.write( "-----
\n" ); document.write( "http://davidmlane.com/hyperstat/z_table.html
\n" ); document.write( "-----
\n" ); document.write( "for this problem, the upper half of the calculator is used.
\n" ); document.write( "enter the mean (100) and enter the sd (15).
\n" ); document.write( "click on between and enter the values you want.
\n" ); document.write( "first value is between 70 and 85.
\n" ); document.write( "answer is 13.5905% which the calculator shows you.
\n" ); document.write( "second value is between 100 and 115.
\n" ); document.write( "answer is 34.1345% which the calculator shows you.\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "
\n" ); document.write( "
\n" );