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Suppose that heights of 10-year old boys vary according to a Normal distribution with = 138 cm and = 7 cm.What proportion of 10-year old

Suppose that heights of 10-year old boys vary according to a Normal distribution with = 138 cm and = 7 cm.What proportion of 10-year old boys is less than 140 cm in height?

Can my answer be checked please.

0.61245152

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