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exams were as follows: Student 1 First exarí grade X Second The first and second exam grades (X,Y) for a sample of ten students in two Ştatistics 2 38 68 23 28 3 40 -40 41 4 65 exa.n grade Y D=Y-X -15 5 NOTE: EX²-30775,, [Y²-34560, 1 70 5 61 71 10 6 50 60 10 [XY=31336 7 56 68 12 8 Give 95% Cl for the mean grades of the first Statistics exarn? exam? 70 74 4 9 40 55 15 10 55 70 15 Mean SD 54.3 55.0 1.7 11.97 Give the correlation coefficient between the first and the second exam grades? a framerades? ve 95% CI for the difference in mean grades between the second and the first exams? 19.18 17.1 solve this only K

exams were as follows: Student 1 First exarí grade X Second The first and second exam grades (X,Y) for a sample of ten students in two Ştatistics 2 38 68 23 28 3 40 -40 41 4 65 exa.n grade Y D=Y-X -15 5 NOTE: EX²-30775,, [Y²-34560, 1 70 5 61 71 10 6 50 60 10 [XY=31336 7 56 68 12 8 Give 95% Cl for the mean grades of the first Statistics exarn? exam? 70 74 4 9 40 55 15 10 55 70 15 Mean SD 54.3 55.0 1.7 11.97 Give the correlation coefficient between the first and the second exam grades? a framerades? ve 95% CI for the difference in mean grades between the second and the first exams? 19.18 17.1 solve this only K

A First Course in Probability (10th Edition)
A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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exams were as follows: Student 1 38 The first and second exam grades (X,Y) for a sample of ten students in two Ştatistics First exarí grade X Second 23 2 68 28 3 40 -40 41 4 65 exa.n grade Y D=Y-X -15 5 NOTE: EX²-30775,, [Y²-34560, 1 70 5 61 71 6 50 10 60 10 [XY=31336 7 56 68 12 8 70 74 4 9 40 55 15 10 55 70 15 Mean SD 54.3 55.0 19.18 1.7 11.97 Give 95% Cl for the mean grades of the first Statistics exam? Give the correlation coefficient between the first and the second exam grades? exam/grades? Sive 95% CI for the difference in mean grades between the second and the first exams? 17.1 solve this only
Transcribed Image Text:exams were as follows: Student 1 38 The first and second exam grades (X,Y) for a sample of ten students in two Ştatistics First exarí grade X Second 23 2 68 28 3 40 -40 41 4 65 exa.n grade Y D=Y-X -15 5 NOTE: EX²-30775,, [Y²-34560, 1 70 5 61 71 6 50 10 60 10 [XY=31336 7 56 68 12 8 70 74 4 9 40 55 15 10 55 70 15 Mean SD 54.3 55.0 19.18 1.7 11.97 Give 95% Cl for the mean grades of the first Statistics exam? Give the correlation coefficient between the first and the second exam grades? exam/grades? Sive 95% CI for the difference in mean grades between the second and the first exams? 17.1 solve this only
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