Suppose the sediment density (g/cm) of a randomly selected specimen from a certain region is uniformly distributed on interval (1.5, 4.5). For one randomly selected specimen, find the probability that the sediment density is less than 3.7 1 g/cm. 2 If a random sample of 49 specimens is selected, what is the approximate probability that the sample mean sediment density is at most 3.1?
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