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1. Identify the three categories of models that are most critical for system preservation management. Discuss the importance of each category.
2. The condition of a certain engineering system ranges from 0 (failed) to 10 (excellent or as-new). The owner seeks the condition level at which rehabilitation of the system must be carried out. Explain why both liberal and conservative thresholds are not cost-effective and describe how you would establish the optimal threshold for that system.
Binomial distribution for large values of the number of trials, n. Suppose that Y has a binomial distribution with n trials and probability of success on any one trial denoted by p. How we can obtain P (Y B)?
Calculate the percent of total deaths from each cause, and display the results in a pie chart. From the death rate (per 100,000 population) for heart disease, calculate the population for Minnesota for the year 1991.
q1. the population of lengths of aluminum-coated steel sheets is normally distributed with a mean of 30.05 inches and a
Income: 1 = 0th-16th percentile, 2 = 17th-33rd percentile, 3 = 34th-67th percentile, 4= 68th-95th percentile, 5 = 96th-100th percentile
True or False? Bivariate correlation coefficient always has same sign as b 1 in Y = b 0 + b 1 X.
A collection of all the test scores for a standardized, post-secondary examination administered in the 1970's across countries along the West African coast, is well-modeled as a random variable X ∼ N (μ, σ2) with μ = 270 and σ = 26.
Construct a 99% confident interval for the standard deviation of the amount of vitamin B6 per pill.
Given the following hypotheses: the true mean equals 100 (the null) and the true mean does not equal 100 (the alternate), a random sample of six resulted in the following values:
The results shown below are mean productivity measurements (average number of assemblies completed per hour) for a random sample of workers at each of three plants.
What is the probability that the bulb drawn is defective? what is the probability that the defective bulb was from box I?
Determine the sample size necessary to estimate a population mean to within 1 with a 90% confidence given that the population standard deviation is 10, Suppose that the sample was calculated at 150. Estimate the population mean with 90% confidence..
discuss why the sampling distribution will be less variable than the population distribution. give a short example to
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