Testasot testid 1514816218oemterwin eyes Spring 2017 MAT 206 Elements of Statist

Question

Testasot testid 1514816218oemterwin eyes Spring 2017 MAT 206 Elements of Statistics Quiz: Quiz #8 (Section 3.4) This Quiz: 19 pts possibl 3 of 8 (2 complete) This Question: 4 pts In a recent year the magnitudes (Richter scale) of 10,594 earthquakes were recorded. The mean is 1.319 and the standard deviation is 0.551. Consider the ts magnitudes that are unusual. What are the magnitudes that separate the unusual magnitudes from those that usual? (consider a value to be unusual z are score is less than 2 or greater than 2.) What are the magnitudes that separate the unusual magnitudes from those that are usual? The lower bound earthquake magnitude is IType an integer or a decimal.) The higher bound earthquake magnitude is Type an integer or a decimal.) Enter your answer in each of the answer boxes. Desktop d O Quizes& Tests-Mo. O Take a Tet-neven su-

Explanation / Answer

Given than (X-M)/sd = -2 or +2

Where M is the mean and sd is the standard deviation

Lower bound earthquake magnitude, X = -2xsd + M

= 1.319-2x0.551 = 0.217

Higher bound earthquake magnitude = 1.319+2x0.551= 2.421

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