Overweight people often become desperate because they different diets without success. Sara, a nutritionist wishes to test the efficiency of one -month diet program being undertaken by 7 candidates. she recorded their weights at the start and end of the program .the result is shown as bellow
|
S.NO
|
Before
|
After
|
|
1
|
68
|
65.5
|
|
2
|
78
|
74.2
|
|
3
|
95
|
90.1
|
|
4
|
85
|
80.3
|
|
5
|
69
|
66.3
|
|
6
|
64
|
61.9
|
|
7
|
73
|
70.1
|
At α=0.02 to test the efficiency of the diet program. Assume normal distribution for the paired difference.