Construct a stemplot of the amounts of Strontium-90. What does the stemplot suggest about the distribution of those amounts?

Use the listed amounts of Strontium-90 (in millibecquerels) in a simple random sample of baby teeth obtained from Pennsylvania residents born after 1979 (based on data from ?An Unexpected Rise in Strontium-90 in U.S. Deciduous Teeth in the 1990s,? by Mangano, et. al., Science of the Total Environment).

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