Replacement of size
List the possible samples without replacement of size 5 that can be obtained from the population of five officials?
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A representative cross section of several thousand husband-wife pairs is obtained. Looking at the ages, the average age of the husbands is 46 years and the average age of the wives is 43 years, with both groups having the same standard deviation o
The air does work in the amount of 30 kJ/kg and 14 kJ/kg of heat is removed from the air during the expansion. The initial volume is 0.00878 m3. Calculate the entropy change of the air per kilogram.
Every month a clothing store conducts an inventory and calculates losses from theft. The store would like to reduce these losses and is considering two methods.
Feed-water heaters are used to increase the efficiency of steam power plants. The heater loses heat at a rate of 50 J/g of exiting mixture. What fraction of the exit stream is steam?
What is the benefit of a two-sample t-test (i.e., independent and dependent)? In other words, under what circumstances would a researcher chose to design an experiment using two samples?
Consider a production system consisting of three Bernoulli machines and a controller, which also obeys the Bernoulli reliability model. This production system is considered up if the controller and at least two machines are up. During each cycle,
Consider a machine with the geometric reliability model. Assume that the breakdown probability, P, is 0.1 and repair probability, R, is 0.6.
Determine the amount of heat that will be transferred to the room when the steam pressure has dropped to 100kpa. Also show the process on a P-v diagram with respect to saturation lines.
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