An LAGDA study was done. The time to metamorphosis is given
in the SAS dataset Alagda2 and the Excel file of the same name. The
variable days is the number of days until developmental stage 62 was reached.
All tadpoles in this study reach that stage before the end of the study, so
there were no censored observations. Analyze the data to determine whether the
test compound had an apparent effect on time to reach stage 62

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