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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).
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Advantages of Standard deviation a.Standard deviation is based on all the observations and is rigidly defined. b.It is amenable to algebraic treatment and possesses
A paper mill produces two grades of paper viz., X & Y. Because of raw material restrictions, it cannot produce more 400 tons of grade X paper & 300 tons of grade Y paper in a week.
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Inflation Inflation is a general increase in the price of goods and services. The inflation rate, as measured by the
Individual User Interests: More specific information about users could cover the following: Subjects and associated interest - e.g. specific subjects, allied subjects;
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Important of Probability The various practical applications of the theory of probability are: a.The fundamental laws of statistic viz the law of statistical regular
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