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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).
You are a manager at a medium sized manufacturing operation that sells a customized product directly to the consumers and the data pattern is linear but it can have the occasion ra
Statement of Hypothesis The two hypothesis i ,e, null hypothesis (H 0 ) and Alternative Hypothesis (H 1 ) are so constructed that if one is correct the other is wron
Use of t -tables Similar to normal curve tables there exist t- distribution tables. However whereas the properties of the normal curve are constant for all
scope of operation research in management
represent a diagrammatic way of components of the os
QUARTILES The three points on the scale of observation ( or values of the variable) which divide the total frequency into four equal parts are called quartiles for t
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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
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
Periodical Article A periodical is a publication that is published periodically like a newspaper a magazine and a journal. Usually periodicals have volume numbers and n
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