the 0.01 level of of significance. 3. A group og Grade 10 Junior High School Learners were given a pretest before undergoing an intensive review in the NSAT. The data obtained are given below. Determine whether the intensive review has an effect on the performance of the students. Let a=0.05. Student Pretest Scores X2-X1 Posttest Scores X2 d X1 1 4 22 26 2 22 5 27 3 23 25 30 34 33 32 35 36 28 27 23 25 20 15 21 19 18 d = 2.2 4 5 6 7 8 9 10 11 12 13 14 15 15 29 27 27 23 23 19 24 20 22 Sd = 2.11 2 4 -1 0 4 -2 3 4 3 4 n = 15

MATLAB: An Introduction with Applications
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Author:Amos Gilat
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and obtained the following data: x₁ = 1 250 g; s₁ = 22; x2 = 1 180 g; s2 = 25. He decided on
the 0.01 level of of significance.
3. A group og Grade 10 Junior High School Learners were given a pretest before
undergoing an intensive review in the NSAT. The data obtained are given below.
Determine whether the intensive review has an effect on the performance of the students.
Let
a=0.05.
Student
Pretest Scores
X2-X1
Posttest
Scores X2
d
X1
1
22
4
26
22
27
23
25
30
34
33
32
35
36
28
29
27
27
23
27
25
23
20
23
15
19
21
24
19
20
18
22
d = 2.2
Sd = 2.11
23
2
4
5
6
7
8
9
10
11
12
13
14
15
15
5
2
4
-1
1
0
4
-2
3
4
3
1
4
n = 15
Transcribed Image Text:and obtained the following data: x₁ = 1 250 g; s₁ = 22; x2 = 1 180 g; s2 = 25. He decided on the 0.01 level of of significance. 3. A group og Grade 10 Junior High School Learners were given a pretest before undergoing an intensive review in the NSAT. The data obtained are given below. Determine whether the intensive review has an effect on the performance of the students. Let a=0.05. Student Pretest Scores X2-X1 Posttest Scores X2 d X1 1 22 4 26 22 27 23 25 30 34 33 32 35 36 28 29 27 27 23 27 25 23 20 23 15 19 21 24 19 20 18 22 d = 2.2 Sd = 2.11 23 2 4 5 6 7 8 9 10 11 12 13 14 15 15 5 2 4 -1 1 0 4 -2 3 4 3 1 4 n = 15
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