document.write( "Question 1189201: A discrete random variable X has probability mass function P(x) = a(2/5)^x, x=0,1,2,3... Find the value of a. \n" ); document.write( "
Algebra.Com's Answer #820494 by ikleyn(52797)![]() ![]() You can put this solution on YOUR website! . \n" ); document.write( " \r\n" ); document.write( "\r\n" ); document.write( "The sum of the infinite geometric progression P(0) + P(1) + P(2) + . . . must be equal to 1. It gives an equation to find \"a\".\r\n" ); document.write( "\r\n" ); document.write( "\r\n" ); document.write( "The sum is equal to\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( " |