Mathematics, 07.11.2019 22:31 mrichardson2880
The authors of the article ‘a probabilistic insulation life model for combined thermal-electrical stresses" (ieee trans. onelect. insulation, 1985: 519—522) state that "the weibull distribution is widely used in statistical problems relating to agingof solid insulating materials subjected to aging and stress." they propose the use of the distribution as a model for time (inhours) to failure of solid insulating specimens subjected to ac voltage. the values of the parameters depend on thevoltage and temperature; suppose a and b = 200(values suggested by data in the article).a. what is the probability that a specimen's lifetime is at most 250? less than 250? more than 300? b. what is the probability that a specimen's lifetime is between 100 and 250? c. what value is such that exactly 50% of all specimens have lifetimes exceeding that value?
Answers: 1
Mathematics, 21.06.2019 23:40, redhot12352
For a science project, a high school research team conducted a survey of local air temperatures. based on the results of the survey, the found that the average temperatures were around 10 degrees higher than expected. this result was wrong. the trouble with the survey was that most of the locations were exposed to direct sunlight and located over asphalt or sand, which resulted in higher temperatures than normal. this is a classic example of an error in which phase of inferential statistics?
Answers: 1
Mathematics, 22.06.2019 00:30, JGottem6489
If you invest 1,500 today in a bank that gives you a 5 percent annual interest rate, which of these items can you buy in two years? a. electronics worth $1,650 b. fitness equipment worth $1,700 c. a holiday package worth $2,000
Answers: 2
Mathematics, 22.06.2019 02:30, ladypink94
P= price tax is 4% added to the price. which expression shows the total price including tax?
Answers: 3
The authors of the article ‘a probabilistic insulation life model for combined thermal-electrical st...
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