Timeline for Hypothesis testing
Current License: CC BY-SA 3.0
13 events
| when toggle format | what | by | license | comment | |
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| Jun 2, 2019 at 16:29 | answer | added | DataFramed | timeline score: -1 | |
| Aug 20, 2016 at 4:20 | comment | added | Glen_b | questions like "If this was a proportions test, what would be the proportion?" are exactly the question to ask yourself when making these decisions. It looks like you already see that there isn't one here (though a small change to the question could make it one -- like if it became a question about pass rates, say) | |
| Aug 20, 2016 at 3:30 | answer | added | Glen_b | timeline score: 1 | |
| Aug 20, 2016 at 3:30 | comment | added | mandy | I don't know thats why I think I should do the mean approach....I have been doing more problems that have to do with the proportions recently as practice so I think that is why I naturally want to go in that direction. Isn't the idea with proportions that you have to have a definite success and failure amount? Which in this case you don't | |
| Aug 20, 2016 at 3:28 | comment | added | Glen_b | What would be the proportion? What proportion would it make sense to compare? | |
| Aug 20, 2016 at 3:28 | comment | added | mandy | Does that seem correct? | |
| Aug 20, 2016 at 3:27 | comment | added | mandy | I guess where I am stuck is should I be approaching this as a proportion hypothesis problem or a mean hypothesis testing problem. If I use the mean approach I think I should I take the average of all these values and find the mean x(bar)female=82.3 and x(bar)male=79.2 and then do a two tailed test with H0: mu(male)=mule(female) and Ha: mu(male) not equal to mu(female) | |
| Aug 20, 2016 at 3:26 | comment | added | Glen_b | Note that it asks you to compare ("average chemistry test score" and that it mentions a "simple random sample of all students" (suggesting that the scores should be independent or close to it. | |
| Aug 20, 2016 at 3:22 | history | edited | mandy |
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| Aug 20, 2016 at 3:18 | comment | added | VCG | Here is a general guide on t tests for difference in means. Try to solve it using this and if you're stuck show us some work and we can help. stattrek.com/hypothesis-test/… | |
| Aug 20, 2016 at 3:16 | comment | added | Glen_b |
Hi mandy, welcome to Cross Validated. Thanks for being clear about the source of the question. We treat these routine bookwork questions a little differently (see the discussion in the help center near the word "Homework"). Please add the self-study tag, read its tag-wiki and modify your question to follow the guidelines on asking such questions. In particular, you'll need to clearly identify what you've done to solve the problem yourself, and indicate the specific help you need at the point you struck difficulty.
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| Aug 20, 2016 at 3:13 | review | First posts | |||
| Aug 20, 2016 at 3:41 | |||||
| Aug 20, 2016 at 3:09 | history | asked | mandy | CC BY-SA 3.0 |