document.write( "Question 1201803: Evaluation:
\n" ); document.write( "the heights of 200 plants in a garden follow a normal distribution with a mean of 72.3 cm
\n" ); document.write( "with a SD of 8.9 cm.
\n" ); document.write( "1. about how many plants whose heights are between 82 and 90 cm? \n" ); document.write( "

Algebra.Com's Answer #836307 by ikleyn(52781) $\"\"$ $\"About$

You can put this solution on YOUR website!
.
\n" ); document.write( "Evaluation:
\n" ); document.write( "the heights of 200 plants in a garden follow a normal distribution with a mean of 72.3 cm
\n" ); document.write( "with a SD of 8.9 cm.
\n" ); document.write( "1. about how many plants whose heights are between 82 and 90 cm?
\n" ); document.write( "~~~~~~~~~~~~~~~~\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "

\r\n" );
document.write( "You can use your regular calculator TI-84, standard function normalcdf\r\n" );
document.write( "(normal cumulative distribution function). It gives the area under the normal curve between \r\n" );
document.write( "the assigned scores, showing you the desired part of 200 plants\r\n" );
document.write( "\r\n" );
document.write( "                  z1  z2  mean  SD    <<<---===  formatting pattern\r\n" );
document.write( "    P = normalcdf(82, 90, 72.3, 8.9) = 0.1145.\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "So, approximately 0.1145 of 200 plants are in this range, or  0.1145*200, which is about 23 plants.\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "Alternatively, you can use this online free of charge calculator\r\n" );
document.write( "\r\n" );
document.write( "https://onlinestatbook.com/2/calculators/normal_dist.html\r\n" );
document.write( "

\r
\n" ); document.write( "\n" ); document.write( "Solved and explained.\r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( " \n" ); document.write( "

\n" );