{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

Topic 7 Overview - wiki

Topic 7 Overview - wiki - Hypothesis Testing 1 Form...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Hypothesis Testing 1. Form hypotheses (null and alternative) 2. Find test statistic (value from sample data on which decision is based z-test (if it follows Z distribution) t-test (if it follows T distribution) χ 2 -test (if it follows χ 2 distribution) 3. Find rejection region 4. Reach conclusion Significance Level α represents "significance level" and is usually predetermined. It is the probability that we make a type 1 error (see below). 2 types of errors: 1. Rejecting the null hypothesis when the null hypothesis is true 2. Fail to reject the null hypothesis although the null hypothesis is false Case 1: Normal population with known σ Null hypothesis: Test Statistic: Rejection Region: Case 2: Large Sample Similar to Case 1, but we use our sample standard deviation instead of σ Null hypothesis: Test Statistic: Rejection Region: Case 3: Normal population with unknown σ and small sample Similar to Case 2, only we use t-test instead of z-test.
Background image of page 1

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

View Full Document Right Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

Page1 / 3

Topic 7 Overview - wiki - Hypothesis Testing 1 Form...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon bookmark
Ask a homework question - tutors are online