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Newborn {human} infants have weights that are approximately normally distributed with a ntean of 1? lbs and a standard deviation of ELSE lbs. [a] {3

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Newborn {human} infants have weights that are approximately normally distributed with a ntean of 1? lbs and a standard deviation of ELSE lbs. [a] {3 pts} What is the probability that a random newborn infant will weigh less than 7.43 lbs\"? lb] {3 puts} What is the probability that the mean weight of a simple random sample of mi} newborn infants is less than \"148 lbs? [e] {2 pts} The mean weight oi~ the 1 l2 newboni humans delivered by a eertain Dbyn in the past 6 months is 145 lbs. What, if anything, might we eonelttde from this about this doctor's medieal praetiee

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