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difference (first - second) in exam scores is -1.75 points with a standard deviation of 7.12 points. Assur the conditions for inference are met, what is the test statistic for testing the hypotheses

difference (first - second) in exam scores is -1.75 points with a standard deviation of 7.12 points. Assur the conditions for inference are met, what is the test statistic for testing the hypotheses

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
Section10.6: Summarizing Categorical Data
Problem 30PPS
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In an effort to improve scores on college-entrance exams, the principal at a large high school chooses 35 students at random who have already taken the exam. The students are enrolled in a six-week prep course to improve their scores. After the prep course, the students take the college-entrance exam again. The mean difference (first – second) in exam scores is -1.75 points with a standard deviation of 7.12 points. Assuming the conditions for inference are met, what is the test statistic for testing the hypotheses Hoi H oiH = 0; Hai H Di < 0? O t= -1.75 -0 7.12 35 0+1.75 O 1= 7.12 V35 -1.75 -0 O 1== 7.12 V35 1.75 -0 O t= 7.12 V35
Transcribed Image Text:In an effort to improve scores on college-entrance exams, the principal at a large high school chooses 35 students at random who have already taken the exam. The students are enrolled in a six-week prep course to improve their scores. After the prep course, the students take the college-entrance exam again. The mean difference (first – second) in exam scores is -1.75 points with a standard deviation of 7.12 points. Assuming the conditions for inference are met, what is the test statistic for testing the hypotheses Hoi H oiH = 0; Hai H Di < 0? O t= -1.75 -0 7.12 35 0+1.75 O 1= 7.12 V35 -1.75 -0 O 1== 7.12 V35 1.75 -0 O t= 7.12 V35
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