A Random Sample of Clients at a Weight Loss Center $95 \%$

question 4

Multiple Choice

A random sample of clients at a weight loss center were given a dietary supplement to see if it would promote weight loss. The center reported that the 100 clients lost an average of 48 pounds, and that a $95 \%$ confidence interval for the mean weight loss this supplement produced has a margin of error of $\pm 7$ pounds.

• A) \(95 \%\) of the people who use this supplement will lose between 41 and 55 pounds.
• B) The average weight loss of clients who take this supplement will be between 41 and 55 pounds.
• C) \(95 \%\) of the clients in the study lost between 41 and 55 pounds.
• D) We are \(95 \%\) sure that the average weight loss among the clients in this study was between 41 and 55 pounds.
• E) We are \(95 \%\) confident that the mean weight loss produced by the supplement in weight loss center clients is between 41 and 55 pounds.

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