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The walls of a vacuum chamber are punctured so that air (γ = 1.4) can flow in. What is the final temperature of the air in the chamber? Assume the temperature of the atmosphere is 300 K? (This is not a free expansion experiment. The system to analyze is the air that occupies the chamber in the final state.)
components of a certain type are shipped to a supplier in batches of ten. suppose that 70 of all such batches contain
The Sony corporation produces a Walkman that requires two AA Batteries. The mean life of these batteries in this product is 35.0 hours. The distribtion of the battery lives closely follows the normal probability distribtion with a standard deviati..
a panel of economists provided forecasts of the u.s. economy for the first six months of 2007 the wall street journal
the distribution of the sum of independent n? ?2 random variables isa. always approximately normalb. always exactly
Test the manager's claim at 5% and 1% significance level tests.
a.There is less than 7 beds per house in Compton; Decision in to reject the null hypothesis b. 30 % of Americans go to church on Sundays. Decision is not to reject the null hypothesis
Grace claims, "the probability of rolling a sum of 12 when you roll two dice is 1/11 , because two dice have sums 2 through 12 which means there are 11 possible sums." How do you respond?
suppose x is uniform on 01 and y x. find the joint distribution function of x and
(a) Show that this second probability statement can be written as Pr (nS2/b tr nS2/a) = 0.95. (b) If n = 9 and s2 = 7.63, find a 95 percent confidence interval for u2.
the previous exercise is very important to your understanding of tests of significance. if you dont use the applet you
Once production is set up, 80 units can be produced per day. Daily demand rate for the units is 60 per day. a. What is the most economical number to produce per production run? b. How long is each production cycle?
the data in table are a sample of the cycle time in days to process and pay employee health insurance claims in a
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