document.write( "Question 1178125: Question is as follows: Population is normally distributed.\r
\n" ); document.write( "\n" ); document.write( "The football coach randomly selected ten players and timed how long eac player took to perform a certain drill. The times (in minutes) were:\r
\n" ); document.write( "\n" ); document.write( "8.3, 7.3, 13.8, 12.6, 11.1, 9.5, 13.7, 14.2, 9.8, 12.6\r
\n" ); document.write( "\n" ); document.write( "Determine a 95% confidence interval for the mean time for all players.\r
\n" ); document.write( "\n" ); document.write( "I'd appreciate any help! I can't seem to get it, even though I believe I'm doing it correctly. \r
\n" ); document.write( "\n" ); document.write( "The multiple choice options are as follows, if it helps:
\n" ); document.write( "A. 9.70 to 12.90
\n" ); document.write( "B. 13.00 to 9.60
\n" ); document.write( "C. 9.60 to 13.00
\n" ); document.write( "D. 12.90 to 9.70 \n" ); document.write( "

Algebra.Com's Answer #807341 by ewatrrr(24785) $\"\"$ $\"About$

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document.write( "Hi\r\n" );
document.write( "Population is normally distributed.\r\n" );
document.write( "Sample n = 10  mean = 11.29  and s = 2.33\r\n" );
document.write( "95% confidence interval:  df = 9 , t = 2.262\r\n" );
document.write( "ME = = 2.262*2.33/√10 = 1.7\r\n" );
document.write( "11.29 - 1.7 <  < 11.29 + 1.7\r\n" );
document.write( " 9.59<  < 12.99\r\n" );
document.write( "CI:  ( 9.60, 13.00) Rounded to nearest tenth.\r\n" );
document.write( "As to Answers, obviously rounding off to the nearest 10th.\r\n" );
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document.write( "Wish You the Best in your Studies.\r\n" );
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