A manager believes that the variance of output on the second shift is greater than the variance on the day shift. The following data are collected: 50 samples on the day shift; variance = 500 40...

A manager believes that the variance of output on the second shift is greater than the variance on the day shift. The following data are collected:

50 samples on the day shift; variance = 500

40 samples on the second shift; variance = 900

Set up hypotheses

Perform a test and state your conclusions.