document.write( "Question 1177048: 5.)Managers at an automobile manufacturing plant would like to estimate the mean completion time of an assembly line operation,
\n" ); document.write( "μ . The managers plan to choose a random sample of completion times and estimate μ via the sample. Assuming that the standard deviation of the population of completion times is 10.2 minutes, what is the minimum sample size needed for the managers to be
\n" ); document.write( "90% confident that their estimate is within 2.0minutes of μ?
\n" ); document.write( "Carry your intermediate computations to at least three decimal places. Write your answer as a whole number (and make sure that it is the minimum whole number that satisfies the requirements).
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Algebra.Com's Answer #805251 by ewatrrr(24785) $\"\"$ $\"About$

You can put this solution on YOUR website!

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document.write( "Hi\r\n" );
document.write( "the standard deviation of the population of completion times is 10.2 minutes\r\n" );
document.write( "to be 90% confident that their estimate is within 2.0minutes of μ:\r\n" );
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document.write( "ME =   0r  \r\n" );
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document.write( "n =  = 70.384   0r 71 sample size (rounding up to nearest whole number)\r\n" );
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document.write( "Wish You the Best in your Studies.\r\n" );
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