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The average weight of a newborn baby is 6.4 pounds with standard deviation 1.2 pounds.  If a...

The average weight of a newborn baby is 6.4 pounds with standard deviation 1.2 pounds.  If a baby girl weighs 5.5 pounds at birth:

what is the z score?

what is her percentile?

math   Statistics-And-Probability   
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Answer #1

given M : 6.4 1.2 9 P(x + 5 ) . P(2-4 7 5.5-6.4) 1.2 Plze (-0.75) 0.2266 percenhle a 22.66 G Z-Score 7: X-4 근 5.5-6.4. Z? 0.7

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