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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).
Uses of Range a.Range is suitable measure of dispersion when the data are too scattered to justify the computation of a more precise measure of dispersion. b.In rece
Among other limitations of O. R the followings deserve mention: a. Basis: The operational researchers must be unbiased. An attempt to shoehorn result sin to a confirmation of ma
Example 2 Max Z = 3x 1 - x 2 Subject to 2x 1 + x 2 ≥ 2 x 1 + 3x 2 ≤ 3 x 2 ≤ 4 & x 1 ≥ 0, x 2 ≥ 0 A
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
significance and scope of operation research
QUESTION 1 Change strategies and OD intervention techniques follow from diagnosis. An inappropriate intervention due to a faulty diagnosis may be very costly to an organization
Significance of operation research
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
whatdo you mean by automation
Multiple Objective s The sample may vary according to the objective of the research. There may several objectives of marketing research so the sample size may vary a
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