A Researcher Has Reason to Believe That, for an Experiment

question 7

Short Answer

A researcher has reason to believe that, for an experiment with 40 points, a 95% prediction interval would be of width 8. If the researcher wishes to run a more precise experiment that will result in a 95% prediction interval of width 4, then the researcher will require how many points?

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Definitions:

Refuse

To decline to accept or to reject.

Non-Local Check

A bank check drawn on any bank that is not local to the area where it is being presented for payment.

Depositary Bank

A financial institution that holds assets or securities for safekeeping on behalf of depositors.

Federal Reserve Bank

A part of the Federal Reserve System, which is the central banking system of the United States, responsible for implementing the country's monetary policy.