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12. A researcher wants to determine the mean incubation time for eggs of the broad-tailed hummingbird. An SRS of 30 eggs resulted in a mean

12. A researcher wants to determine the mean incubation time for eggs of the broad-tailed hummingbird. An SRS of 30 eggs resulted in a mean incubation time of 17.83 days with standard deviation 2.20 days. Determine a 99% confidence interval for the mean incubation time for eggs for the broad-tailed hummingbird

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