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As in the case of the Weibull and Gamma distributions, the lognormal distribution can be modified by the introduction of a third parameter g such that the pdf is shifted to be positive only for x . g. The article cited in Exercise 4.39 suggested that a shifted lognormal distribution with shift (i.e., threshold) 5 1.0, mean value = 2.16, and standard deviation = 1.03 would be an appropriate model for the rv X = maximum-to-average depth ratio of a corrosion defect in pressurized steel.
a. What are the values of m and s for the proposed distribution?b. What is the probability that depth ratio exceeds 2?c. What is the median of the depth ratio distribution?d. What is the 99th percentile of the depth ratio distribution?
What are some conditions under which business decisions are made using subjective probability concepts? Could you please cite two examples of subjective probability.
suppose x and y are independent. let x have the mean 3 and y have the mean 2. find the covariance of xy and
Compute the effect size with gender as the grouping variable and ADDSC as the dependent variable.
At the 5% level of significance, is there evidence of a difference among the mean access read times for the three files sizes?
If a remote's maximum range is 10 feet, what percentage of the time will users attempts to operate the remote outside of its operating limit?
What are the limitations and assumptionbs of the t-test? What are some examples in your field (Nursing) for which you might use a t-test to compare a sample to the population and why?
A role as a statistical consultant. You are the statistical expert for a graduate student planning her PhD research. After you carefully present the mechanics of signi?cance testing, she suggests using α = 0.25 for the study because she would be m..
Surveys of political opinion typically use a quota sample of 1000 voters with a new sample being selected each time. In the period before a general election, some organizations use panels. Suggest reasons for using a panel in preference to the mor..
in a study of pregnant women and their ability to correctly predict the sex of their baby 59 of the pregnant women had
the 92 million americans of age 50 and over control 50 percent of all discretionary income aarp bulletin march 2008.
describe and explain two alternatives to nhst. what do their proponents consider to be their
Determine the critical path and project completion time.
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