Statistics Solutions

[Solution] Weights of newborn babies in the United States vary according to a normal distribution whose mean is 7.5 pounds and whose standard deviation is

Question: Weights of newborn babies in the United States vary according to a normal distribution whose mean is 7.5 pounds and whose standard deviation is 1.25 pounds.

If you take a random sample of 3 babies, what’s the probability that their average weight \[\bar{X}\] will be more than 5.5 pounds?

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