The following data set contains the marks of 30 students in two courses. Assume that the variances for the classes are 9 and 16 respectively. 1. Find the confidence Intervals for each class? Where a 0.05:0.1. 2. Discuss your results? 1 Students Y 90 120 2. 99 130 3. 80 105 4 75 110 5. 80 115 80 99 88 105 1. 8. 99 130 9. 90 125 10 90 110 11 80 108 12 80 99 13 85 102 14 80 101 15 88 121 16 90 125 17 90 125 18 92 110 19 80 118 20 70 100 21 80 105 22 80 110 23 88 120 24 85 10 25 90 125 26 80 118 27 75 99 28 80 102 29 85 101 30 80 121

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The following data set contains the marks of 30 students in two courses.
Assume that the variances for the classes are 9 and 16 respectively.
1. Find the confidence Intervals for each class?
Where a = 0.05:0.1.
2. Discuss your results?
1
Students
X
Y
90
120
99
130
3
80
105
4
75
110
5
80
115
6
80
99
88
105
8.
99
130
9
90
125
10
90
110
11
80
108
12
80
99
13
85
102
14
80
101
15
88
121
16
129
125
90
17
125
90
92
18
110
19
80
118
20
70
100
21
80
105
22
80
110
23
88
120
24
85
110
25
90
125
26
80
118
27
75
99
28
80
102
29
85
101
30
80
121
Transcribed Image Text:The following data set contains the marks of 30 students in two courses. Assume that the variances for the classes are 9 and 16 respectively. 1. Find the confidence Intervals for each class? Where a = 0.05:0.1. 2. Discuss your results? 1 Students X Y 90 120 99 130 3 80 105 4 75 110 5 80 115 6 80 99 88 105 8. 99 130 9 90 125 10 90 110 11 80 108 12 80 99 13 85 102 14 80 101 15 88 121 16 129 125 90 17 125 90 92 18 110 19 80 118 20 70 100 21 80 105 22 80 110 23 88 120 24 85 110 25 90 125 26 80 118 27 75 99 28 80 102 29 85 101 30 80 121
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