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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
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section: Chapter Questions
Problem 13PT
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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
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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