Using Technology to Construct Confidence Intervals 345 See Example 5, page 303. See Example 3, page 313. See Example 2, page 322. TI-84 PLUS TI-84 PLUS TI-84 PLUS EDIT CALC TESTS 1: Z–Test... 2: T–Test... 3: 2–SampZTest... 4: 2–SampTTest... 5: 1–PropZTest... 6: 2–PropZTest... 7È ZInterval... EDIT CALC TESTS 2Ç T–Test... 3: 2–SampZTest... 4: 2–SampTTest... 5: 1–PropZTest... 6: 2–PropZTest... 7: ZInterval... 8È TInterval... EDIT CALC TESTS 5Ç 1–PropZTest... 6: 2–PropZTest... 7: ZInterval... 8: TInterval... 9: 2–SampZInt... 0: 2–SampTInt... AÈ 1–PropZInt... TI-84 PLUS TI-84 PLUS TI-84 PLUS ZInterval Inpt:Data Stats s:1.5 x:22.9 n:20 C–Level:.9 Calculate TInterval Inpt:Data Stats x:9.75 Sx:2.39 n:36 C–Level:.99 Calculate 1-PropZInt x:378 n:540 C–Level:.95 Calculate TI-84 PLUS TI-84 PLUS TI-84 PLUS ZInterval (22.348, 23.452) x=22.9 n=20 TInterval (8.665, 10.835) x=9.75 Sx=2.39 n=36 1-PropZInt (.66135, .73865) np=.7 n=540
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