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20 August, 08:09

A shipment of ball bearings with a mean diameter of 25 mm and a standard deviation of 0.2 mm is normally distributed. by how many standard deviations does a ball bearing with a diameter of 25.6 mm differ from the mean? 0.6 1 2 3

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  1. 20 August, 09:19
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    Mean diameter = 25 mm

    Standard deviation = 0.2 mm

    25.6 mm - 25 mm = 0.6 mm

    0.6 mm : 0.2 mm = 3

    Answer:

    A ball bearing with a diameter 25.6 mm differs from the mean

    D) 3 standard deviations.
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