*PPT* - *Hypothesis* Testing 1-* Tailed*, Small Samples,

*HYPOTHESIS*A statement about the value of a population parameter developed for the purpose of testing.

PowerPoint

*PPT*Presentation.

*One*-

*Problem Hotel Rates.*

*Tailed**Two*possibilities for 1-

*tests. We’ll always put = with the null*

*tailed**hypothesis*. Example 3 A luxury hotel chain claims that the mean weekend bill for a family is 0 or less.

THREE CRITERIA FOR THE USE OF __ONE__-__ TAILED__ TESTS For example, if someone says “all Floridian’s have a 50% increased chance of melanoma”, it’s up to you to decide if this claim holds merit.

The opening of the

**one**-

**avenue.1. 1 An example of an experiment with an explicit directional**

**tailed****hypothesis**, but employing a

**two**-

**test, is reported by.**

**tailed***One* *and* *Two* * Tailed* t Tests Conduct a test of

*hypothesis*about a population mean.

The

*two*-

*t-test is performed if the results would be interesting in either direction. The choice of a*

*tailed**one*- or

*two*-

*t-test effects the*

*tailed**hypothesis*testing procedure in a number of different ways. Comparison of

*One*

*and*

*Two*-

*t-tests.*

*tailed***Hypothesis** Testing Upper-, Lower, **and** **Two** ** Tailed** Tests Alternative names are

__one__-sided

__and__

__two__-sided tests; the terminology "tail" is used because the extreme portions of distributions, where observations lead to rejection of the null

__hypothesis__, are small

__and__often "tail off" toward zero as in the normal distribution or "bell curve", pictured above rht.

Upper-

*, Lower-*

*tailed**,*

*tailed**Two*-

*Tests. The research or alternative*

*tailed**hypothesis*can take

*one*of three following fures illustrate the rejection regions defined by the decision rule for upper-, lower-

*and*

*two*-

*Z tests with α=0.05.*

*tailed**One* * Tailed* Test or

*Two*in

*Hypothesis*Testing. How to

*HYPOTHESIS*TESTING A procedure based on sample evidence

*and*probability theory to determine whether the

*hypothesis*is a reasonable statement.

__Hypothesis__Testing

__One__

__Test or__

__Tailed____Two__? Watch the video or read the article belowArea under a normal distribution curve–

__two__

__test. In__

__tailed____hypothesis__testing, you are asked to decide if a claim is true or not.

M7_hypothesis_part2- DePaul University __One__-__ tailed__ tests are used for asymmetric distributions that have a single tail, such as the chi-squared distribution, which are common in measuring goodness-of-fit, or for

__one__side of a distribution that has

__two__tails, such as the normal distribution, which is common in estimating location; this corresponds to specifying a direction.

List, from memory, the basic steps in a

__hypothesis__test. difference for a

__one__-

__v.s.__

__tailed____two__-

__test; Calculate a p-value for either__

__tailed____one__-

__or__

__tailed____two__-

__tests.__

__tailed____ONE__-

__TESTS__

__TAILED__*One*

*and*

*Two*

*t Tests*

*Tailed***Hypothesis**Testing Upper-, Lower,

**and**

**Two**

**Tests**

**Tailed**One tailed and two tailed hypothesis ppt:

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