A Researcher Wants to Estimate the Mean Cholesterol Level of People

question 55

Multiple Choice

A researcher wants to estimate the mean cholesterol level of people in his city.A random sample of 221 people yields an average cholesterol level of 219,with a margin of error of ±12.Assume the researcher used a confidence level of 90%.

• A)We are 90% confident that 90% of people in the city have a cholesterol level between 207 and 231.
• B)The researcher can be 90% confident that the mean cholesterol level for people in his city is between 207 and 231.
• C)90% of the people sampled have cholesterol levels between 207 and 231.
• D)If we took many random samples of people in the city,about 9 out of 10 of them could produce a confidence interval of (207,231).
• E)About 9 out of 10 people in the researcher's city have cholesterol levels between 207 and 231.

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Definitions:

Negotiation

A bargaining process in which disputing parties interact informally to attempt to resolve their dispute. Also, the transfer of the rights to a negotiable instrument from one party to another.

Liability

The state of being responsible for something, especially in terms of legal or financial obligations that may arise from actions or transactions.

Discharged

Released from liability for a negotiable instrument.

Negotiable Instrument

A written, transferable document signed by the maker or drawer, containing an unconditional promise or order to pay a specified amount of money on demand or at a set time.