I the Student T Distribution Has a Greater Spread Than

question 36

Multiple Choice

i. The Student t distribution has a greater spread than does the z distribution. As a result, the critical
Values of t for a given level of significance are larger in magnitude than the corresponding z critical
Values.
ii. The test statistic t has n-1 degrees of freedom.
iii. William S. Gosset, a brewmaster, developed the t test for the Guinness Brewery in Ireland, who
Published it in 1908 using the pen name "Student."

• A) (i), (ii), and (iii) are all correct statements.
• B) (iii) is a correct statement but not (i) or (ii).
• C) (i) and,(iii) are correct statements but not (ii).
• D) (ii) and (iii) are correct statements but not (i).
• E) (i), (ii), and (iii) are all false statements.

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Definitions:

Dissipates

The process by which matter or energy disperses or spreads out to a less concentrated form, often resulting in a more uniform distribution.

Usable

Suitable or ready for use; able to be used for a particular purpose or in a particular way.

Delta G

The change in Gibbs free energy, predicting the direction of chemical reactions and their spontaneity.

Free Energy

A thermodynamic quantity that represents the amount of energy in a system that is available to do work.