1. A meat packaging plant uses a machine that packages ground chuck in three-pound portions. a...

1. A meat packaging plant uses a machine that packages ground chuck in three-pound portions. a sample of 62 packages of the ground chuck has a variance of 0.10. construct a 98 percent confidence interval to estimate the variance fo the weights of the packages prepared by the machine. round answer to two decimal places.

2. The following sample of diameters was taken from 5 balls off the assembly line. Construct the 80% confidence interval for the population standard deviation for all balls that come off the assembly line. Round your answers to two decimal places.

14.5, 15.5, 14.4, 14.9, 14.5

Lower endpoint = ?

upper endpoint = ?

Expert Solution

orchestra answered 1 year ago

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