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The magnitude of earthquakes since 1900 that measures 0.1 or higher on the Richter scalein California is approximately normally distributed, with a mean 6.2 and a standarddeviation 0.5, according to data obtained from the U.S. Geological Survey.If 4 earthquakes are randomly selected since 1900, find the probability that their mean

The magnitude of earthquakes since 1900 that measures 01 or higher on the Richter scalein California is approximately normally distributed with a mean 62 and a class=

Respuesta :

Answer:

Explanation:

a.

Parameters:

Mean, m = 6.2

Standard Deviation, d = 0.5

Number of sample, n = 4

b.

Z score:

[tex]\begin{gathered} Z=\frac{n-m}{d} \\ \\ =\frac{4-6.2}{0.5}=-\frac{2.2}{0.5}=-4.4 \\ \end{gathered}[/tex]

c.

The probability of x<4 = 0.00001

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