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12th Standard English Medium Business Maths Subject Sampling Techniques and Statistical Inference Book Back 2 Mark Questions with Solution Part - II updated Book back Questions

Published on: 13/05/2022

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Download Tamil Nadu 12th Standard Business Maths and Statistics question papers, model tests, one-mark questions, important questions, and public exam papers in PDF format. Free study materials and answer keys for TN State Board students.

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Std: 12th Standard - Business Maths and Statistics

chapter: - Book back Questions

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Questions:

Generic 2

5 x 2 = 10

What is single tailed test.

Define level of significance.

Define critical region.

What is null hypothesis? Give an example.

What is interval estimation?

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Answers Key:

Generic 2

5 x 2 = 10

When the hypothesis about the population parameter is rejected only for the value of sample statistic falling into one of the tails of the sampling distribution, then it is known as one tailed test.

The probability of type I error is known as level of significance denoted by \(\alpha\). It is always fixed in advance before collecting the sample information.

A region corresponding to a test statistic in the sample space which tends to rejection of Ho is called critical region.

Null hypothesis is the hypothesis which is tested for possible rejection under the assumption that it is true and it is denoted by H₀.
Example: If we want to find the population mean has a specific value μ_o, then the null hypothesis H_o is H_o : μ = μ₀

Generally, there are situations where point estimation is not desirable and we are interested in finding limits within which the parameter would be expected to lie is called an interval estimation.