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Quantitative Techniques-II

Notes Null Hypothesis: The null hypothesis is a hypothesis which the researcher tries to disprove,
reject or nullify.

12.8 Review Questions

1. What hypothesis, test and procedure would you use when an automobile company has
manufacturing facility at two different geographical locations? Each location manufactures
two-wheelers of a different model. The customer wants to know if the mileage given by
both the models is the same or not. Samples of 45 numbers may be taken for this purpose.
2. What hypothesis, test and procedure would you use when a company has 22 sales
executives? They underwent a training programme. The test must evaluate whether the
sales performance is unchanged or improved after the training programme.
3. What hypothesis, test and procedure would you use A company has three categories of
managers:
(a) With professional qualifications but without work experience.
(b) With professional qualifications accompanied by work experience.

(c) Without professional qualifications but with work experience.

Answers: Self Assessment

1. Hypothesis
2. Null hypothesis
3. Two-tailed
4. Degree of freedom
5. 1%
6. Normal distributions
7. Non-parametric
8. P-value

12.9 Further Readings

Books Abrams, M.A, Social Surveys and Social Action, London: Heinemann, 1951.
Arthur, Maurice, Philosophy of Scientific Investigation , Baltimore: John Hopkins
University Press, 1943.
R.S. Bhardwaj, Business Statistics, Excel Books, New Delhi, 2008.
S.N. Murthy and U. Bhojanna, Business Research Methods, Excel Books, 2007.

Online links www.indiastudychannel.com
www.scribd.com/doc
www.soas.ac.uk
www.web-source.net

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