An engineer wishes to determine the width of a particular electronic component. If she knows that the standard deviation is 2.9 mm, how many of these components should she consider to be 90% sure of knowing the mean will be within ±0.6±0.6 mm? 29 8 64 532 39

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An engineer wishes to determine the width of a particular electronic component. If she knows that the standard deviation is 2.9 mm, how many of these components should she consider to be 90% sure of knowing the mean will be within ±0.6±0.6 mm?

  • 29
  • 8
  • 64
  • 532
  • 39
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