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For the last 300 years, extensive records have been kept on volcanic activity in Japan. In 2002, there were five eruptions or instances of major seismic activity. From historical records, the mean number of eruptions or instances of major seismic activity is 2.4 per year. A researcher is interested in modeling the number of eruptions or major seismic activities over the 5-year period, 2005-2010.
a. What probability model might be appropriate?
b. What is the expected number of eruptions or instances of major seismic activity during 2005-2010?
c. What is the probability of no eruptions or instances of major seismic activities during 2005-2010?
d. What is the probability of at least two eruptions or instances of major seismic activity?
Moving until all the nodes 1,2,......,m have been visited at least once. Starting at node 0, find the probability that node i is the last node visited, i=1,.....m.
q1 use the normal approximation to the binomial to find the probability of x 20 when n 30 and p 0.5.q2 of
What is the expected number of heads, E(X)? What is the variance? Find the value of c (Hint: Use the fact--- total probability=1) Calculate the mean and variance.
A mean of 20 minutes and a standard deviation of 3 minutes. how long does it take the slowest 10% of the students to walk from the dorms to the chemistry lab.
Explain in your own words (no direct quotes, please) what it means when there is an interaction between two factors.
a horizontal pipe is 100 m long with a diameter of 0.6 m. the pipe carries a steady flow of water of 0.5 m3s. the gage
type your question here an article in the jornal of statstic education reported the price of diamond of different carat
If f is upper semicontinuous on a compact space S, show that for some t ∈ S, f (t ) = sup f := sup{ f (x ): x ∈ S}. Hint: Let an ∈ R, an ↑ sup f . Consider f -1((-∞, an )), n = 1, 2,... .
Dr. Walker is an industrial psychologist. She is currently studying stress among executives of Internet companies. She has developed a questionnaire that she believes measures stress.
Corporation has 2000 male and 500 female engineers. Stratified random sample of 200 male and 50 female engineers provides each engineer. How is the stratified sample different from the SRS?
A Russian SVR agent has 45 million dollars which he can spend to bribe academics, politicians, and bloggers to spread disinformation and to promote anti-American propaganda
Research question : At α = . 01, is degree of certainty independent of credits earned?
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