Twelve Dieters Lost an Average of 9

question 41

Multiple Choice

Twelve dieters lost an average of 9.8 pounds in 6 weeks when given a special diet plus a "fat-blocking" herbal formula. A control group of twelve other dieters were given the same diet, but without the herbal formula, and lost an average of 8.8 pounds during the same time. The standard deviation of the "fat-blocker" sample was 2.6 and the standard deviation of the control group was 2.8. Find the 95% confidence interval for the differences of the means.

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Definitions:

Price Of Corn

The cost at which corn is sold, typically influenced by factors such as supply, demand, and market conditions.

Interest Rate

The amount charged by a lender to a borrower for the use of assets, expressed as a percentage of the principal.

Variable-Rate Loan

A loan where the interest rate can change, based on an underlying benchmark or index that reflects the cost to the lender of borrowing on the credit markets.