The results of an online regional survey of the approval rating of the President before and after pandemic is given below. Test if there is a statistical proof, assuming equal variance and 5% level of significance, that there is a difference between their rating in relation to the pandemic experienced by the country. Assuming normality of data is observed.

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
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The results of an online regional survey of the approval rating of the President before and after pandemic is given below. Test if there is a statistical proof, assuming equal variance and 5% level of significance, that there is a difference between their rating in relation to the pandemic experienced by the country. Assuming normality of data is observed.
Regions 2020
65
45
47
2021
NCR
87
64
35
CAR
56
46
47
3
44
55
35
4A
54
48
57
58
70
33
70
6.
69
89
72
92
93
90
95
93
98
92
10
89
94
11
12
89
92
13
85
78
BARMM
Transcribed Image Text:Regions 2020 65 45 47 2021 NCR 87 64 35 CAR 56 46 47 3 44 55 35 4A 54 48 57 58 70 33 70 6. 69 89 72 92 93 90 95 93 98 92 10 89 94 11 12 89 92 13 85 78 BARMM
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