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10 October, 02:09

The length of a screw produced by a machine is normally distributed with a mean of 0.25 inches and a standard deviation of 0.01 inches. What percent of screws are between 0.24 and 0.26 inches?

68%

95%

99.7%

100%

+2
Answers (2)
  1. 10 October, 03:35
    0
    I believe the answer would be C. Cause the deviation is so small most nails would be between there.
  2. 10 October, 05:46
    0
    68% that is one standard deviation. Sigma + 1 and sigma - 1
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