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Firlakuza [10]
3 years ago
10

According to a statistical​ journal, the average lengths of a newborn is 19.6 inches with a standard deviation of 1.2 inches. Th

e distribution of lengths is approximately Normal. What is the probability that a newborn baby will have a length of 18 inches or​ less? (Please include steps)
Mathematics
1 answer:
avanturin [10]3 years ago
3 0

Answer:

9.18%

Step-by-step explanation:

First, find the z-score.

z = (x − μ) / σ

z = (18 − 19.6) / 1.2

z = -1.33

Use a chart or calculator to find the probability:

P(Z < z) = 0.0918

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