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Physical Sciences
Alaska, California, and Hawaii are the states with the most earthquakes, and over 50% of the earthquakes in the United States occur in Alaska. A random sample of earthquakes around the world during July 2013 was obtained, and the magnitude of each is given in the following table.
a. An earthquake with magnitude of 1.0 to 4.0 is considered weak and generally causes minor or no damage. Is there any evidence to suggest the true mean magnitude of earthquakes is greater than 1.0? Assume the underlying distribution is normal and use a = 0.05.
b. Find bounds on the p value associated with this test.
the average number of pounds of meat a person consumes a year is 218.8 with a standard deviation of 25 pounds. assume
In a random sample of 250 senior students from your college, 40% reported that they had taken a statistics course. Give n and X for this setting.
A sample of 30 firms reveals an average of $235 million and a standard deviation of $85 million. Conduct the test at α = 0.05 and α = 0.01. State your conclusions.
Express the probability as a decimal
The grade appeal process at a university requires that a jury bestructured by selecting 6 individuals randomly from a pool of 6 students and 13faculty . (a) What is the probability of selecting a jury of all students?
A university found that 20 percent of its students withdraw without completing the introductory statistics course. 20 students registered for a section of the course this term.
According to an article in USA Today, 90% of Americans will suffer from high blood pressure as they age. Out of 20 randomly chosen people what is the probability that at most 3 will suffer from high blood pressure?
Use a 1% level of significance to test the claim that the distribution of first nonzero digits in the account file does not follow Benford's Law.
Apply an appropriate hypothesis test and the 0.05 level of significance in determining whether the region should be considered as having a burglary problem greater than that for the nation as a whole.
Predict the final grade for a student who studies statistics 8 hours per week (x1), attends 34 classes (x2), and turns in 11 assignments (x3).
a student has 40 chance of getting a scholarship. consider a group of 10 students.a. what is the probability that
How are observations related to the process of forming a hypothesis
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