Statistics
posted by John .
Native American pot shards discovered i a hpoi villiageare approximately normally distributed with a mean of 5.1 millimeters and a standard deviationof 0.9mm what is the probability that the thickness is (a)less than 3.0mm (b) more than 7.0 and (c) between 3.omm and 7.0mm

Statistics 
PsyDAG
Convert to Z scores and use that table.
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