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Unformatted text preview: of PopulaDon 1 ▪ Basing predicDon on previous research μ = 0.90 7 9/29/13 2. Figure the raw score cutoﬀ point on the comparison distribuDon needed to reject the null hypothesis a) On the comparison distribuDon, shade the alpha region (region more extreme than the criDcal value); this is the alpha region Popula@on 2: DistribuDon of means Mean: μM = 1.20 Standard devia@on: σM = 0.16 Cutoﬀ Z (p < .05, one
tailed) : Z = 1.645 0.88 1.04 1.2 1.36 1.52 Popula@on 2: DistribuDon of means Mean: μM = 1.20 Standard devia@on: σM = 0.16 Cutoﬀ Z (p < .05, one
tailed) : Z =
1.645 0.88 1.04 1.2 1.36 1.52 Z =
1.645 8 9/29/13 Popula@on 2: DistribuDon of means Mean: μM = 1.20 Standard devia@on: σM = 0.16 Cutoﬀ Z (p < .05, one
tailed) : Z =
1.645 Cutoﬀ Raw = (Cutoﬀ Z)(σM) + μM =
1.645(.16) + 1.20 = 0.94 0.88 1.04 1.2 1.36 1.52 Z =
1.645, Raw = 0.94 Popula@on 2: DistribuDon of means Mean: μM = 1.20 Standard devia@on: σM = 0.16 Cutoﬀ Z (p < .05, one
tailed) : Z =
1.645 Cutoﬀ Raw = (Cutoﬀ Z)(σM) + μM =
1.645(.16) + 1.20 = 0.94 Shaded region is alpha 0.88 1.04 1.2 1.36 1.52 Z =
1.645, Raw = 0.94 3. Figure the Z score for this cutoﬀ point, but on the distribuDon of means for PopulaDon 1 a) On the distribuDon of means for PopulaDon 1, shade the region more extreme this Z score; this shaded region shows the power of the study 9 9/29/13 0.58 0.74 0.9 1.06 1.22 Popula@on 1: Dis of means Predicted Mean: μM = .90 Sta...
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This note was uploaded on 03/24/2014 for the course PSY 21201 taught by Professor Bernard during the Winter '13 term at SUNY Stony Brook.
 Winter '13
 bernard
 Psychology

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