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I don't understand this problem 4. Suppose we know that the birth weight of babies is normally distributed with mean 3800g and standard deviation 400g.

I don't understand this problem

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4. Suppose we know that the birth weight of babies is normally distributed with mean 3800g and standard deviation 400g. (1) What is the probability that a baby is born with weight less than 3200g? a. Find the z-score, and construct the standard normal distribution density curve, then shade your seeking area. b. Find the probability

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