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A meat packaging plant uses a machine that packages ground chuck in two pound portions. A...

A meat packaging plant uses a machine that packages ground chuck in two pound portions. A sample of 11 packages of ground chuck has a standard deviation of 0.14. Construct the 98% confidence interval to estimate the standard deviation of the weights of the packages prepared by the machine. Round your answers to two decimal places.

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Answer #1

98% confidence interval for is

Sqrt [ ( n-1) S2 / /2 ] < < Sqrt [ ( n-1) S2 / 1-/2 ]

Sqrt [ (11-1) * 0.142 / 23.209 ] < < Sqrt [ (11-1) * 0.142 / 2.558 ]

0.09 < < 0.28

98% CI is ( 0.09 , 0.28)

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