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Let X denote the time to failure (in years) of a certain hydraulic component. Suppose the pdf of X is
a. Verify that f (x) is a legitimate pdf.
b. Determine the cdf.
c. Use the result of part (b) to calculate the probability that time to failure is between 2 and 5 years.
d. What is the expected time to failure?
e. If the component has a salvage value equal to 100y(4 - x) when its time to failure is x, what is the expected salvage value?
the u.s. bureau of labor statistics releases figures on the number of full-time wage and salary workers with flexible
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Suppose for a particular set of data r = 0.889, ybar = 5.5, n = 15 and the equation for the regression line is yhat = 3.5 + 2.5x. Find the best-predicted value of y given that x = 2.0.
apples market share in the smart phone market represents a proportion of 0.1835. if apple conducts a survey nationwide
Among 620 adults selected randomly from among the residents of one town, 18.9% said that they favor stronger gun-control laws.
The goal of a study by Klinger et al. was to determine how symptom recognition and perception influence clinical presentation as a function of race. They characterized symptoms and care-seeking behavior in African-American patients with chest pain..
Assuming that all other variables are held constant describe how value of z is influenced by each of the following: If alpha level is changed from a = .05 to a = .01. What occurs to boundaries for the critical regions?
The camera store in question wants to increase sales and is exploring three options: 1. Invest and expand the current store. 2. Open a second store in another part of the city. 3. Open an online outlet.
in the past 35 of the students at abc university were in the business college 35 of the students were in the liberal
in a recent study 90 percent of the homes in the united states were found to have tvs. in a sample of nine homes what
When processing oil into heating oil, there are no partial amounts (i.e. the oil must be processed to complete heating oil; no partial composition). An LP program has been established to maximize profits for the production of the three types of o..
Given a situation where a control chart with 3-sigma limits is being constructed to monitor the percentage of defective items produced by a process, if samples of 100 units each are taken from the process and the average percent defective found in..
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