Earthquakes The data below list the number of earthquakes recorded in the United States
Chapter 9, Problem 22(choose chapter or problem)
Earthquakes The data below list the number of earthquakes recorded in the United States in 2009 that measured below 8 on the Richter scale. Magnitude Earthquakes 00.9 17 1.01.9 26 2.02.9 2374 3.03.9 1491 4.04.9 293 5.05.9 55 6.06.9 4 7.07.9 0 Source: National Earthquake Information Center. (a) Are these sample data or population data? (b) Find the mean magnitude of the earthquakes in the United States in 2009. (c) Find the standard deviation of the magnitude of the earthquakes recorded in the United States in 2009.
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