Two groups, X and Y of freshmen students, 28 in each group are paired for age and score on Form A of the Otis Group Intelligence Scale. Three weeks later, both groups are given Form B of the same test. Before the second test, Group X, the experimental group, is praised for its performance on the first test and urged to try to score better. Group Y, the control group, was given the second test without comment. Will the incentive (praise) cause the final scores of Group X and Group Y to differ significantly? Test the hypotheses at 0.10 level of significance given the information below Mean Scores on Form B Final Test Group Y Group X 88.63 83.24 Standard Deviation on Form B Final Test Group X 24.36 Group Y 21.62
Two groups, X and Y of freshmen students, 28 in each group are paired for age and score on Form A of the Otis Group Intelligence Scale. Three weeks later, both groups are given Form B of the same test. Before the second test, Group X, the experimental group, is praised for its performance on the first test and urged to try to score better. Group Y, the control group, was given the second test without comment. Will the incentive (praise) cause the final scores of Group X and Group Y to differ significantly? Test the hypotheses at 0.10 level of significance given the information below Mean Scores on Form B Final Test Group Y Group X 88.63 83.24 Standard Deviation on Form B Final Test Group X 24.36 Group Y 21.62
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.6: Summarizing Categorical Data
Problem 10CYU
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Transcribed Image Text:Two groups, X and Y of freshmen students, 28 in each group are paired for age and score on
Form A of the Otis Group Intelligence Scale. Three weeks later, both groups are given Form B of
the same test. Before the second test, Group X, the experimental group, is praised for its
performance on the first test and urged to try to score better. Group Y, the control group, was
given the second test without comment. Will the incentive (praise) cause the final scores of
Group X and Group Y to differ significantly?
Test the hypotheses at 0.10 level of significance given the information below
Mean Scores on Form B Final Test
Group Y
Group X
88.63
83.24
Standard Deviation on Form B
Final Test
Group X
24.36
Group Y
21.62
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