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We've established that heights of 10-year-old boys vary according to a Normal distribution with = 138 cm and = 7 cm What proportion is less

We've established that heights of 10-year-old boys vary according to a Normal distribution with = 138 cm and = 7 cm

What proportion is less than 124 cm in height?

A.

0.9544 or 95.44%

B.

0.00228 or 0.228%

C.

0.0228 or 2.28%

D.

0.228 or 22.8%

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