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Prob._8.18 - 8.18(1 H0 H1 H2=0 H 1J1—1J2 7-‘0(2...

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Unformatted text preview: 8.18 (1) H0 H1- H2=0 H - 1J1—1J2 7-‘0 (2) n’s < 30 9 t-test, 2—tailed (3) a = .05 df=n1+n2—2=25+20—2=43 toritz t40 .-025 ":2. 021 (4) _ 971- E tcalc _ 32 29+ _p 711712 (25—1)122+ (20~~~-1)232 33 = ——-—-—--— : 314.11 25+20—2 87—64 314.11+ 314.11 25 20 (5) teak; > tcrit reject H0 The travel guides are not equal. ...
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