document.write( "Question 928168: According to a study conducted in 2003 concerning the participation, by age, of 401(k) investors, the following data were obtained:
\n" ); document.write( "Age 20s 30s 40s 50s 60s
\n" ); document.write( "Percent 11 28 30 25 6
\n" ); document.write( "(a) What is the probability that a 401(k) investor selected at random was in his or her 20s or 60s?
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\n" ); document.write( "\n" ); document.write( "(b) What is the probability that a 401(k) investor selected at random was under the age of 50?
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Algebra.Com's Answer #563506 by 428225(90)\"\" \"About 
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Part a)
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\n" ); document.write( "P(20s) = 11%
\n" ); document.write( "P(60s) = 6%
\n" ); document.write( "11+6= 17%
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\n" ); document.write( "Part b)
\n" ); document.write( "100% - P(50s) - P(60s)
\n" ); document.write( "=100-25-6
\n" ); document.write( "=69%\r
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