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A plate of iron is exposed to a carburizing (carbon-rich) atmosphere on one side and a decarburizing (carbon-deficient) atmosphere on the other side at 700?C. If a condition of steady state is achieved, calculate the diffusion flux of carbon through the plate if the concentration of carbon at positions of 5 and 10 mm beneath the carburizing surface are 1.2 and 0.8 kg/m3, respectively. Assume a diffusion coefficient of 3 × 10-11 m2/s at this temperature.
An investor owns three common stocks. Each stock, independent of the others, has equally likely chances of (1) increasing in value, (2) decreasing in value, or (3) remaining the same value.
derive the formulas for the lower and upper conf bound given in the lecture notes starting from the given self-evident
test for single mean.according to one investigators model the data are like 400 draws made at random from a large box.
Develop a 95% confidence interval to estimate the difference in SAT math scores from students in Delaware and New jersey.
Normal distribution with a standard deviation of 800. what sample size would be required to be 95% certain of estimating the mean error to within 150 of the true value?
Ten prominent citizens have been nominated for a community's "Citizen of the Year" award. First- and second-place trophies are awarded to the two persons receiving the highest and second-highest number of votes.
Bill is completing a project for you in the marketing department. In conducting his anaysis regarding consumer behavior and a new product that has been released, he tells you the correlation between these two variables is 1.09.
The data below show the average daily high temperature for Chicago, Illinois, for twelve recent spring and summer months. Create a stem-and -leaf diagram for the data.
the acceptable level for insect filth in a certain food item is 4 insect fragments per 10 grams. a sample random of 50
A multiple choice quiz has 150 questions each with 5 choices and only 1 is the correct answer. What is the probability that sheer guess work yield from 30 to 40 correct answers out of the 150 questions?
What is the relationship between confidence intervals and hypothesis testing? How are they the same? How are they different?
a large furniture store furniture store has begun a new a ad campaign on local tv. before the campaign the long term
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