8. You are an environmental scientist interested in the effects of chemical runoff from a local factory. You randomly sample 38 fish from a nearby pond, and measure lead levels in the blood (in micro- grams/deciliter). You find a sample mean of 8.3 and a sample standard deviation of 1.9. Construct a 95% confidence interval for the true lead levels for fish in this pond, and interpret your interval in words. xtre ) d Chod ted of 18

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Q: 3. A psychologist is studying the effects of lack of sleep on the performance of various…

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