Cloud seeding has been studied for many decades as a weather modification procedure. The rainfall in acre-feet from 20 clouds that were selected at random and seeded with silver nitrate follows: 18.0, 30.7, 19.8, 27.1, 22.3, 18.8, 31.8, 23.4, 21.2, 27.9, 31.9, 27.1, 25.0, 24.7, 26.9, 21.8, 29.2, 34.8, 26.7, and 31.6. (This is the same dataset that was used for Problem 2 in Homework Assignment #2.) For this week's assignment, use hypothesis testing to determine whether the data support a claim that the mean rainfall from the seeded clouds exceeds 25 acre-feet. Use a = 0.01.

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