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The mean is 3800g and the standard deviations is 400g (II) If 30 new born babies are randomly selected, what is the probability that when

The mean is 3800g and the standard deviations is 400g

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(II) If 30 new born babies are randomly selected, what is the probability that when 30 babies are born, their mean weigh is 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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