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Home Q & A Board Science-Related Homework Help Mathematics
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csutherland1 csutherland1
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8 years ago


The data in the table below represent time study observations for a woodworking operation.

Observations (minutes per cycle)

Element    Performance rating   1   2   3   4   5   6
1   110%      1.20   1.17   1.16   1.22   1.24   1.15
2   115      0.83   0.87   0.78   0.82   0.85   1.32*
3   105      0.58   0.53   0.52   0.59   0.60   0.54

Based on the observations, determine the standard time for the operation, assuming an allowance of 15 percent of the job time. (round 3 decimal places)

Element      Standard Time
1      __________
2      __________
3      __________

How many observations would be needed to estimate the mean time for element 2 within 1 percent of its true value with a 95.5 percent confidence? (round calculations to 3 decimal places and round final answer to next whole number)

Number of observations     ____________

How many observations would be needed to estimate the mean time for element 2 within .01 minute of its true value with a 95.5 percent confidence? (round calculations to 3 decimal places and round final answer to next whole number)

Number of observations    ____________
 
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bio_manbio_man
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csutherland1 Author
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8 years ago
Good timing, thanks!
Evolution
wrote...

Yesterday
I appreciate what you did here, answered it right Smiling Face with Open Mouth
Natalie Price
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2 hours ago
Smart ... Thanks!
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