Confidence Interval/ Other Information Flashcards
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| 63883521 | Mean One Sample (Population σ is known) | xbar± z* (σ/√[n]) | |
| 63883522 | Mean One sample (Population σ is not known) | xbar± t* (s/√[n]); df = n-1 | |
| 63883523 | Matched Pairs | xbar± t* (s/√[n]); where xbar is the average difference in pairs and s is the standard deviation of the average diff's; df = n-1, where n is the # of pairs | |
| 63883524 | Proportion One Sample | phat± z*√(phatqhat/n) | |
| 63883525 | Mean Two Sample (Population σ1 and σ2 not known) | xbar1-xbar2± t*√(S²1/n1+S²2/n2); df = smaller of n1-1 and n2-1 (or use answer on calculator) | |
| 63883526 | Proportion Two Sample | (phat1-phat2)± z*SE; where: SE = √(phat1qhat1/n1+phat2qhat2/n2) | |
| 63883627 | X² Test of Goodness of Fit (Homogeneity [all proportions equal]) | Size: n x 1 matrix; df = n-1 | |
| 63884262 | X² Test of Association of Independence/ Slope of Population Regression Line | Expected Cell Value = (RowTotal)(ColumnTotal); confidence Interval: b± t*SEb; where SEb = s/√(Σ[x-xbar]²); df = n-2 |