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 |
65.5 |
||
74.2 |
||
90.1 |
||
80.3 |
||
66.3 |
||
61.9 |
||
70.1 |
At α=0.02 to test the efficiency of the diet program. Assume normal distribution for the paired difference