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Steel rods are manufactured to a specification of 20cm length and are acceptable only if they are within the limits of 19.9cm and 20.1cm. The

Steel rods are manufactured to a specification of 20cm length and are acceptable

only if they are within the limits of 19.9cm and 20.1cm. The lengths are normally

distributed with the mean 20.02cm and standard deviation 0.05cm. Find the

percentage of rods which will be rejected as

(a) undersized, (b) oversized.

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