In a study of a weight lost program , 40 subjects lost a mean of 3.0 lbs after 12 months .. does the weight loss program have statistical significance

Yes, the weight loss program is statistically significant.

Step-by-step explanation:

In a study of a weight lost program , 40 subjects lost a mean of 3.0 lbs after 12 months.

A statistical significance shows if the difference observed between groups is real or if it has occurred simply due to chance. Moreover in statistics, nothing happens by chance.

So, here the weight loss program is statistically significant as the results are unlikely to occur by chance.

x:       y:  

-1         4

0         4

1         6

2         18

3         20