Question

richter scale measure earthquake magnitudes.th magnitude of earthquakes measure in california is exponentially distributed with mean 3.4

a) finf the probability the next earthquake wwill be no more than 3.6 on the richter scale

b) given the next earthquake will be more than 4 on the richter scale what is the probabilty it will be more than 5

Answer #1

Assume that Richter scale magnitudes of earthquakes are normally
distributed with a mean of 1.925 and a standard deviation of 0.317.
Use the appropriate z-score table when necessary.
a.) What is the z score that corresponds to a Richter scale
magnitude of 1.811? (round to two decimal places)
z = Answer
b.) What Richter scale magnitude (to three decimal places) would
correspond to a z-score of 1.8?
Answer
c.) What is the probability of an earthquake having a Richter
scale...

The magnitude of earthquakes since 1900 that measure 0.1 or
higher on the Richter Scale in California is approximately normally
distributed with µ = 6.2 and o =0.5, according to the data obtained
from the U.S. Geological Survey. based on this data, geologists can
tell us that approximately 20% of all earthquakes in California
have magnitudes of ? or more.

Earthquake magnitudes are exponentially distributed, with a mean
magnitude of 4.7.
(a) What is the probability that the next earthquake will have
magnitude between 3.6 and 5.2?
(b) What is the 85th percentile of the magnitude
distribution?

1. Earthquake magnitudes are exponentially distributed, with a
mean magnitude of 4.7.
(a) What is the probability that the next earthquake will have
magnitude between 3.6 and 5.2? (2)
(b) What is the 85th percentile of the magnitude
distribution? (2)
2. Suppose that commuting times are uniformly distributed, and
range between 10 minutes and 55 minutes.
(a) What is the probability that an individual has a commuting
time between 20 and 40 minutes? (2)
(b) What is the 65th percentile...

In a recent year the magnitudes (Richter scale) of 10,594
earthquakes were recorded. The mean is 1.277 and the standard
deviation is 0.566. Consider the magnitudes that are unusual. What
are the magnitudes that separate the unusual magnitudes from those
that are usual? (Consider a value to be unusual if its z 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...

According to seismologists, an earthquake that registers 2 on
the Richter scale is hardly perceptible, while and earthquake that
measures 5 on this scale is capable of shattering windows and
dishes and is generally classified as "minor". The San Francisco
earthquake in 1989 caused great damage and registered 7.1 on the
Richter scale.
Richter scale: M=2/3logE-2.9 M is magnitude and E is energy in
Joules
a.) Compare the energy release of the San Francisco earthquake
to a level 5 minor...

The Richter Scale gives a mathematical model for the magnitude
of an earthquake in terms of the ratio of the amplitude of an
earthquake wave (also known as the intensity of an earthquake) to
the amplitude of the smallest detectable wave. If we denote the
magnitude of the earthquake by R, the intensity (also known as the
amplitude of the earthquake wave) of the earthquake by A, and the
amplitude of the smallest detectable wave by S, then we can...

On average, a major earthquake (Richter scale 6.0 or above)
occurs 3 times a decade in a certain California county. What is the
probability that less than six months will pass before the next
earthquake?

One historic earthquake had a magnitude of 8.8 on the Richter
scale. How many times more intense was this than another historic
earthquake that had a magnitude of 8.2? (Round your answer to two
decimal places.)
_______times

18.
The accompanying data table lists the magnitudes of 50
earthquakes measured on the Richter scale. Test the claim that the
population of earthquakes has a mean magnitude greater than 1.00.
Use a 0.05 significance level. Identify the null hypothesis,
alternative hypothesis, test statistic, P-value, and conclusion
for the test. Assume this is a simple random sample
Magnitude of Earthquake
0.690
0.740
0.640
0.390
0.700
2.200
1.980
0.640
1.220
0.200
1.640
1.320
2.950
0.900
1.760
1.010
1.260
0.000
0.650...

ADVERTISEMENT

Get Answers For Free

Most questions answered within 1 hours.

ADVERTISEMENT

asked 5 minutes ago

asked 5 minutes ago

asked 5 minutes ago

asked 12 minutes ago

asked 47 minutes ago

asked 48 minutes ago

asked 51 minutes ago

asked 54 minutes ago

asked 55 minutes ago

asked 59 minutes ago

asked 1 hour ago

asked 1 hour ago