Timeline for Keeping getting wrong answer calculating confidence intervals
Current License: CC BY-SA 3.0
7 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Oct 30, 2016 at 14:47 | vote | accept | Elliot | ||
| Oct 28, 2016 at 11:12 | comment | added | mdewey | As @DimitriyV.Masterov points out that is not the df in this case. | |
| Oct 28, 2016 at 2:34 | answer | added | dimitriy | timeline score: 2 | |
| Oct 28, 2016 at 1:18 | comment | added | Elliot | The value I got for the square root part of it was 2.106. I have heard different things about the right number of degrees of freedom,I think the rule in this case would be the smaller of $n_1 -1$ and $n_2 -1$ which would be 9 in this case. That gives a $t$ value of 2.262. Then the CI would be (-7.220932 ,3.065) | |
| Oct 28, 2016 at 1:02 | comment | added | dimitriy | I think that 95% CI would be what you would get if you did a two-sample t test with equal variances. Your formula, however, is for unequal variances. What did you your calculation yield? | |
| Oct 28, 2016 at 0:15 | review | First posts | |||
| Oct 28, 2016 at 2:26 | |||||
| Oct 28, 2016 at 0:15 | history | asked | Elliot | CC BY-SA 3.0 |