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Suppose that an electronic system comprises four components, and let Xj denote the time until component j fails to operate (j = 1, 2, 3, 4). Suppose that Xl' x2 , X3, and X4 are Li.d. random variables, each of which has a continuous distribution with d.f. F(x). Suppose that the system will operate as long as both component 1 and at least one of the other three components operate. Determine the dJ. of the time until the system fails to operate.
a. Give the state-transition-rate diagram of the process. b. What is the probability that both attendants are busy attending to customers?
During a recent year the average cost of making a movie was $54.8 million. This year, a random sample of 15 recent action movies had an average production cost of $62.3 million with a variance of $ 8 million.
Dice. The seller of a loaded die claims that it will favor the outcome 6. We don't believe that claim, and roll the die 200 times to test an appropriate.
The table shows the percentages of income levels for each type of animal owned. Are these row percentages, column percentages, or table percentages?
using the data provided x the quality of the speed of execution and y overall satisfaction with the electronic trades
Assume that a 95% confidence interval estimate of the new annual starting salary is desired. How large a sample should be taken if we do not want to exceed $500? What do you know?
Some national statistics indicate the self-reported number of minutes per week of exercise is μ = 96.8 among college students. At the University of Wisconsin
Here is an alternative to the Hosmer-Lemeshow goodness-of-fit test when at least one predictor is continuous: Partition values for the explanatory variables into a set of regions. Add these regions as a predictor in the model by setting up dummy v..
A. What proportion of people in the survey believed the sun went around Earth? B. Find a 95% confidence interval for the proportion of all people with this belief.
a researcher wants to find out how college students feel about their social security system. which of the following
Set up the appropriate null and alternative hypothesis for testing whether the original sample overestimated the average executive director annual salary.
the speed of automobiles on i-20 west of fortworth texas is being investigating by the texas department of public
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