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The following table that summarizes the different hypothesis test distributions and when each is used

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The following table that summarizes the different hypothesis test distributions and when each is used. This table can be can be helpful as you os
complete your Competency Assessment. “a
Normal distribution |
Population mean known
Test Population standard deviation known |
Sample size is greater than 30 if not normal
Quantitative variables
Normal distribution
Population mean known
Test Population standard deviation unknown
“s Sample size is a) nearly normal with sample less than 15; b) at least 15 with no outliers; c) greater than 30 even if skewed or not
normal
Quantitative variables
ariables are qualitative
esting if observed results agree with claimed (Goodness of Fit Unequal Frequencies)
Chi esting if outcomes occur with the same frequency (Goodness of Fit Equal Frequencies) .
oquare esting if outcomes are independent of treatment (Goodness of Fit Test of Independence)
| [Used to test the relationship between variables
od. : Data in two-way table of counts of outcomes

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