Question

It was determined that the average weight of a newborn baby at the local hospital is 3.6 kg with a standard deviation of 0.7 kg. What is the probability that a newborn baby would weigh below 4.3 kg?

Answer 1

$μ = 3.6 \\ σ = 0.7 \\ P(X<4.3) = P(\frac{x-μ}{σ} < \frac{4.3-3.6}{0.7}) \\ = P(Z < 1.0) \\ = 0.8413$

84.13 % is the probability that a newborn baby would weigh below 4.3 kg.