'Critical value t' diaporamas de présentation

Hypothesis Testing Review

Hypothesis Testing Review. ? 2 & GAMMA. Example: Men and Women and support for Gun Control. H 0 : No difference between men and women in support for gun control. H 1 : Men are not equal to women , men could be more or less supportive, at one tail of the distribution or the other.

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How many colleges did you apply to?

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STA291

STA291. Statistical Methods Lecture 27. Inference for Regression. Does the cost of a movie depend on its length? Now we want to know, how useful is this model?. The Population and the Sample. The movie budget sample is based on 120 observations .

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Chapter 11

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Section 7-4

Section 7-4. Estimating a Population Mean: ? Not Known. ASSUMPTIONS: ? NOT KNOWN. 1. The sample is a simple random sample. 2. Either the sample is from a normally distributed population or n > 30. When ? is not known we will use the Student t Distribution .

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Stat 13, Tue 5/22/12. 1. Midterms back. 2. SE and CI for difference between two means.

Stat 13, Tue 5/22/12. 1. Midterms back. 2. SE and CI for difference between two means. 3. Testing basics. 4. Z test and t test for two samples. Final exam is Thur, 6/7, in class. Hw6 is due this Thu, 5/24. Change in hw6: Ignore problem 7.30 in the 3 rd edition / 7.2.8 in the 4 th edition.

179 views • 8 slides