To Estimate with 95% Confidence the Average Number of Kilometres

question 172

Multiple Choice

To estimate with 95% confidence the average number of kilometres that students living off-campus commute to classes every day, a random sample of 20 students was taken and produced a mean equal to 5.2 km and a standard deviation of 3.05 km. Under these circumstances, what is the appropriate critical value?

• A) 1.7291
• B) 1.96
• C) 2.086
• D) 2.093

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Definitions:

Action Potentials

Electrical impulses that neurons generate to transmit information throughout the nervous system.

Novocaine

A synthetic compound used as a local anesthetic, particularly in dentistry.

Action Potentials

Brief electrical impulses that serve as the fundamental signaling processes of nerve cells, enabling communication throughout the nervous system.

Neurons

Cells in the nervous system that transmit information to other nerve cells, muscle, or gland cells.