document.write( "Question 1197854: An economics professor randomly selected 10 millionaires in the United States. The average age of these millionaires was 54.8 years with a standard deviation of 7.9 years. What is the 95% confidence interval for the mean age of all United States millionaires?
\n" ); document.write( " \n" ); document.write( "
Algebra.Com's Answer #831299 by ewatrrr(24785)\"\" \"About 
You can put this solution on YOUR website!
\r\n" );
document.write( "Hi  \r\n" );
document.write( "Sample:  n = 10, x-bar = 54.8  and s = 7.9\r\n" );
document.write( "95% CI,  t = 2.262\r\n" );
document.write( "ME = 2.262*7.9/√10 = 5.65  = 5.7(rounded to the same accuracy as s)\r\n" );
document.write( "54.8  ±  5.7 \r\n" );
document.write( "CI(49.1,60.5)\r\n" );
document.write( "Wish You the Best in your Studies.\r\n" );
document.write( "

\n" ); document.write( " \n" ); document.write( "
\n" );