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Kassler’s new plant makes pistons where the variation in radius must be minimal. You sample 26...

Kassler’s new plant makes pistons where the variation in radius must be minimal. You sample 26 pistons and find a standard deviation of 1.18 mm. Assuming the radii to be normally distributed, find:

  1. X2L and X2R for a 80% confidence. __________ and __________
  2. X2L and X2R for a 99% confidence. __________ and __________

The 95% confidence for the population variance. _______________________

Math   Statistics-And-Probability   
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