A Random Sample of Clients at a Weight Loss Centre

question 65

Multiple Choice

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 100 clients lost an average of 47 pounds,and that a 95% confidence interval for the mean weight loss this supplement produced has a margin of error of ±9 pounds.

• A)95% of the people who use this supplement will lose between 38 and 56 pounds.
• B)The average weight loss of clients who take this supplement will be between 38 and 56 pounds.
• C)95% of the clients in the study lost between 38 and 56 pounds.
• D)We are 95% sure that the average weight loss among the clients in this study was between 38 and 56 pounds.
• E)We are 95% confident that the mean weight loss produced by the supplement in weight loss centre clients is between 38 and 56 pounds.

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Definitions:

Selling Price

The amount for which a product or service is sold to a customer.

Accurate

Free from errors or mistakes; precise and correct in details.

Cent

The smallest denomination of many currencies, representing 1/100th of the currency's main unit.

Percent

A ratio or fraction calculated out of 100, used to indicate portions of a whole.