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Part The average height of 1 year old babies is found to be 29 inches . Assume that the distribution of heights is normal ,

Part The average height of 1 year old babies is found to be 29 inches . Assume that the distribution of heights is normal , and the population standard deviation is 2.61 inches . Find the probability that a randomly selected 1 year old baby is more than 27.3 inches tall . Part B-If a random sample of 15 babies is selected from the population , find the probability that mean height of the babies in the sample is less than 28 inches

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