The average weight of a newborn infant is 2.7 kg.An infant that ways 3.15 kg has a z-score of 1.Find the standard deviation.
A)0.05 kg
B)0.14 kg
C)1.35 kg
D)0.45 kg
E)2.7 kg

Name: The average weight of a newborn infant is 2.7 kg.An infant that ways 3.15 kg has a z-score of 1.Find the standard deviation. A)0.05 kg B)0.14 kg C)1.35 kg D)0.45 kg E)2.7 kg
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Question

Quizplus · Accepted Answer

The z-score formula is (X - μ) / σ = z. Here, X = 3.15 kg, μ = 2.7 kg, and z = 1. Solving for σ gives σ = (3.15 - 2.7) / 1 = 0.45 kg.

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