document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1049760>Question 1049760</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The average  life of a bread making machine is 7 years with a standard deviation of 1 year. assuming that  lives of these machines follow approximately a normal distribution. find (a) the probability that the mean life of a random sample of such machines fall between 6.4 and 7.2 year? </SPAN>\n" );
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document.write( "The average life of a bread making machine is 7 years with a standard deviation of 1 year. assuming that lives of these machines follow approximately a normal distribution. find <BR>\n" );
document.write( "(a) the probability that the mean life of a random sample of such machines fall between 6.4 and 7.2 year?<BR>\n" );
document.write( "mean of the sample means = 7<BR>\n" );
document.write( "std of the sample means = 1/sqrt(n)<BR>\n" );
document.write( "----<BR>\n" );
document.write( "You have to post the sample size.<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );