A new machine is set or calibrated to fill tubes of toothpaste at precisely 6.75

Question

A new machine is set or calibrated to fill tubes of toothpaste at precisely 6.75 ounces. Then, once the machine is running, a sample of 8 tubes is taken every three hours and weighed with the following results:

What is the value of the lower control factor of the range?

0.136

0.331

0.434

0.297

  WEIGHT OF TOOTHPASTE   TIME 7 am 6.80 6.79 8.56 6.88 6.85 6.87 6.90 6.92 10 am 6.82 6.83 6.82 6.87 6.86 6.85 6.90 6.89 1 pm 6.77 6.79 6.78 6.82 6.87 6.89 6.92 6.81 4 pm 6.84 6.85 6.83 6.87 8.56 6.86 6.82 6.82 7 pm 6.86 6.84 6.86 6.88 6.90 6.86 6.86 6.82

Explanation / Answer

A new machine is set or calibrated to fill tubes of toothpaste at precisely 6.75

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