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An environmental study assessed lead levels in crows, identifying levels above 6.0 ppm as unhealthy. A sample of 23 crows was analyzed, revealing a mean lead level of 4.90 ppm and a standard deviation of 1.12 ppm. The document includes tasks for calculating the proportion of unhealthy lead levels and constructing a 95% confidence interval for the mean lead level.

Author

aanyasinghnyc

Language

EN