A Random Sample of Clients at a Weight Loss Centre

A random sample of clients at a weight loss centre were given a dietary supplement to see if it would promote weight loss.The centre reported that the 20 clients lost an average of 15.3 kg,and that a 95% confidence interval for the mean weight loss this supplement produced has a margin of error of ±4.5 kg.

A) 95% of the clients in the study lost between 10.8 and 19.8 kg.
B) 95% of the people who use this supplement will lose between 10.8 and 19.8 kg.
C) We are 95% confident that the mean weight loss produced by the supplement in weight loss centre clients is between 10.8 and 19.8 kg.
D) We are 95% sure that the average weight loss among the clients in this study was between 10.8 and 19.8 kg.
E) The average weight loss of clients who take this supplement will be between 10.8 and 19.8 kg.