QUICK giving brainliest to the correct answer and please answer all 3 questions for full points

In a study of a weight loss program, 40 subjects lost a mean of 3.0 lb after 12 months. does the weight loss program have practical significance? a. yes, because the weight loss program worked and the subjects lost a mean of 3.0 lb. b. no, because the mean weight loss of 3.0 lb after one year does not seem to justify the program. c. no, because the sample of 40 subjects was too small to determine if the program was useful. d. yes, because the mean weight loss of 3.0 lb after one year does seems to justify the program.

During a formal discussion in his science class, kai will be speaking about the important of exercise. what is the best advice he can follow to be a prepared speaker

Although the percentage of teens smoking has gone done in recent years, the number is still approximately percent. question 15 options: 10 30 40 20