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A researcher was interested in determining the effect of an experimental drug on the lifespan of laboratory rats. Shown below is a summary of lifespans, in months, for laboratory animals administered the drug. Compute the median number of months the animals survived.

Number of months	Number of animals surviving
6	10
5	10
4	15
3	25
2	25
1	5
0	10

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Statistics and Probability, Statistics

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