document.write( "Question 1165633: The quality control manager at a light bulb factory needs to estimate the mean life of a large shipment of light bulbs. The standard deviation is 108 hours. A random sample of 81 light bulbs indicated a sample mean life of 400 hours. Complete parts​ (a) through​ (d) below. \n" ); document.write( "
Algebra.Com's Answer #852154 by ikleyn(52781)\"\" \"About 
You can put this solution on YOUR website!
.
\n" ); document.write( "The quality control manager at a light bulb factory needs to estimate the mean life of a large shipment of light bulbs.
\n" ); document.write( "The standard deviation is 108 hours. A random sample of 81 light bulbs indicated a sample mean life of 400 hours.
\n" ); document.write( "Complete parts​ (a) through​ (d) below.
\n" ); document.write( "~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~\r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "There are no parts (a) through (d) in the post.\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "They all were lost due to the carelessness of the person or people who prepared this post.\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "It is a typical case when they send a message without reading it and without looking in it.\r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( " \n" ); document.write( "
\n" );