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Oxnard Petro Ltd. is buying hurricane insurance for its off-coast oil drilling platform. During the next five years, the probability of total loss of only the above-water superstructure ($320 million) is .30, the probability of total loss of the facility ($820 million) is .30, and the probability of no loss is .40.
In given problem, suppose the population mean is µ = 125 and the population standard deviation is 20. What are the expected value and the standard deviation of X‾?
Computer science instructor, 3 statistics instructors, and 4 science instructors. If an instructor is selected, find the probability of getting a science instructor or math instructor.
You plan to start saving for your son's college education.- If an annual deposit of $1,484 will allow you to reach your goal, how old is your son now?
in a mathematics exam the average grade was 82 and the standard deviation was 5. all students with grade between 88 to
Suppose that a coin is tossed 3000 times and 1800 heads result. What is the empirical probability that a head will occur with this coin? Is there evidence.
question 1 in 1999 lehman brothers estimated that 48 of its investment bank traders took diverse forms of soft drugs.
A data set of 32 stream sections includes the following variables: X1 is the depth of flow; X2 is the roughness of the channel bottom.
A survey is done to estimate the proportion of U.S. adults who think that cell phone use while driving should be illegal. In the survey, 54% of a randomly.
a 6-faced die is rolled two times. let a be the event that the outcome of the first roll is greater than 4. let b be
Assume the population is normally distributed and use a? t-distribution to construct a 90?% confidence interval for the population mean mµ.
a typing competency test yields scores which are normally distributed with a mean of 80 and a standard deviation of 10.
College graduates, and half of the college graduates are married. What is the probability that a randomly chosen worker is: Neither married nor a college graduate?
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