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Probability of a baby weighing between 3 and 4 kg

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Babies born in singleton births in the U.S. have weights that are approximately normally distributed with mean 3.3 kg and standard deviation 0.6 kg. Regarding this population:

1. What is the probability of a baby weighing between 3 and 4 kg?

2. What is the weight of a baby in the 5th percentile? That is, ?nd the weight such that 5% of babies weigh less.

3. Suppose babies lighter than the 5th percentile require special treatment for low weight. Suppose, further, that a hospital typically has ten newborn babies per day that may be regarded as randomly and independently chosen from the population. What is the probability that two of a day's ten babies are lighter than the 5th percentile?

Reference no: EM132847994

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