The diameters of 10000 ball bearings were measured...
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Probability and statistics

The diameters of 10000 ball bearings were measured. The mean diameter and standard deviation were found to be 10 mm and 0.05 mm respectively. Assuming Gaussian distribution of measurements, it can be expected that the number of measurement more than 10.15 mm will be

  1. 230
  2. 115
  3. 15
  4. 2

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