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Test Statistic
The next step is compute an appropriate test statistic which is based on an appropriate probability distribution. It is used to test whether the null hypothesis set up should be accepted or rejected. For this purpose we use Z distribution under normal curve for large sample where the sample size is equal to or larger than 30 (n ≥ 30) and the distribution for small sample where the sample size n less than 30 ( n< 30).
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
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There is no unique set of problems which can be solved by using operations Research Models r techniques. Several operations Research Models or techniques can be grouped into some b
How to solve linear programming problems using simplex method introducing slack variable,surplus variable and artificial variable
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Scope of operation research?
McColvin's Principles: L.R McColvin advanced his Demand and Supply Theory of Book Selection in 1925. He states, "Books in themselves are nothing. They have no more meaning tha
Uses of Mode The use of the mode is recommended in the following situations: a.When a quick and approximate measures of central tendency desired. b.When the measure
Techniques of Observation Method Observation always involves some interaction between respondent and researcher in which researcher has an opportunity to watch respondent fu
Maximize Z= 3x1 + 2X2 Subject to the constraints: X1+ X2 = 4 X1 - X2 = 2 X1, X2 = 0 on..
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