Week2B&amp;3B2304

# Week2B&amp;3B2304 - ADM2304 One Proportion Dr Suren...

This preview shows pages 1–4. Sign up to view the full content.

1 ADM2304: One Proportion Dr. Suren Phansalker 1. Hypothesis Testing: All Scientific methodologies depend on first using a hypothesis or or plausible explanation and then proving or disproving this hypothesis. In the Science of Statistics the Hypothesis Testing is a highly specialized methodology which is used for Accepting or Rejecting the Hypotheses for the Parameters of a Population. Remember, Hypothesis Testing is always done for Population Parameters, and different Statistic-s are used for Accepting or Rejecting the Hypotheses.

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
2 So far, we have learnt about the Central Limit Theorem, CLT, for Means & Proportions, Confidence Intervals, CI, for Means & Proportions and Sample Size, n, when dealing with Proportions. It is now an appropriate time to consider Hypothesis Testing of Proportions. 2. Hypothesis Tests for One Proportion: Hypothesis Tests for all parameters come in three forms. Test #1: Two Tailed Tests Structure of this Test for One Proportion is as follows: H 0 : p = p 0 Î Null ( Notice ‘0’ in H 0 ) Hypothesis. H A : p p 0 Î Alternate ( Notice ‘A’ in H A ) Hypothesis. Here the assumed value is p 0 and it is a value which we want to disprove. The test is called “Two Tailed” because it is possible that p > p 0 or p < p 0 or p p 0 .
3 If the Null Hypothesis, H 0 cannot be disproved then we say, Do Not Reject H 0 . If we can disprove the Null Hypothesis, then we say Reject H 0 . We rarely say Accept Alternate Hypothesis, H A . This is the typical statistical usage of expressions which can be called Statistical “jargon”. We also establish a formal methodology for performing Hypothesis Tests. An Example would demonstrate it clearly. 3. Example for Two Tailed Test for One Proportion: Remember, in the “Voting Fraud” example we did, n = 100, and Test the hypothesis that that the population proportion, p is equal to 0.80.

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

### Page1 / 16

Week2B&amp;3B2304 - ADM2304 One Proportion Dr Suren...

This preview shows document pages 1 - 4. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online