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In this method variables beings studied are controlled by the investigator. In other the effect of one variable is observed while other relevant variables are held constant.
This methods includes field experiment as well as laboratory experimentation. In field experiment the study is conducted b comparing experimental group with the control group. In laboratory experiment the investigator creates a situation with the exact conditions he wants to have and in which he controls some and manipulates other variables. He then observes and measures the effect of the manipulation of the independent variables on the dependent variables in a situation in which the operation of other relevant factors is held to a minimum.
Normal 0 false false false EN-IN X-NONE X-NONE PROBABILITY DISTRIBUTION
A paper mill produces two grades of paper viz., X and Y. Because of raw material restrictions, it cannot produce more than 400 tons of grade X paper and 300 tons of grade Y paper i
Maximize Z= 3x1 + 2X2 Subject to the constraints: X1+ X2 4 X1+ X2 2 X1, X2 0on..
Maximize w = 5x -2y +3z subject to 2x +2y -z>=2 y + 3z
Cost- sampling decisons σ x¯ =S/√n Where is the standard error of he mean is the standard devaluation of the population and n is t
model building is the essence of the operational research discuss
What Is operation Research
Properties of Normal Distribution a.It is a continuous probability distribution having parameters m and . b.The normal curve is perfectly symmetrical about the mean (
Maximize Z = 2x - 7y subject -2x + 3y = 3 4x + 5y >= 10 6x + 7y 4x + 8y >= 5
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