Question: Rainmakers? In an experiment to determine whether seeding clouds with silver iodide increases rainfall, 52 clouds were randomly assigned to be seeded or not. The

Rainmakers? In an experiment to determine whether seeding clouds with silver iodide increases rainfall, 52 clouds were randomly assigned to be seeded or not.

The amount of rain they generated was then measured

(in acre-feet). Create a 95% confidence interval for the average amount of additional rain created by seeding clouds. Explain what your interval means.

Unseeded Clouds Seeded Clouds Count 26 26 Mean 164.588 441.985 Median 44.200

Unseeded Clouds Seeded Clouds Count 26 26 Mean 164.588 441.985 Median 44.200 221.600 SD 278.426 650.787 IntQRange 138.600 337.600 25 %ile 24.400 92.400 75 %ile 163 430

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