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Specification calls for screw diameters

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Reference no: EM131852493

The diameters of screws in a batch are normally distributed with mean equal to 2.10 cm and standard deviation equal to 0.15 cm.

a) What proportion of screws are expected to have diameters greater than 2.50 cm?

b) A specification calls for screw diameters between 1.75 cm and 2.50 cm. What proportion of screws will meet the specification?

Reference no: EM131852493

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