Write the Word or Phrase That Best Completes Each Statement $\frac { \bar { x } - 71 } { 11 / \sqrt { 35 } }$

question 50

Essay

Write the word or phrase that best completes each statement or answers the question.
-Scores on a test are normally distributed with a mean of 71 and a standard deviation of 11. For samples of size 35, which of the two variables below has more variation? Why? What is the distribution of each of the variables?
(a) $\frac { \bar { x } - 71 } { 11 / \sqrt { 35 } }$

(b) $\frac { \bar { x } - 71 } { s / \sqrt { 35 } }$

---

Definitions:

Doublet

A pattern seen in NMR spectroscopy indicating two adjacent hydrogen atoms influencing a signal.

NMR

Nuclear Magnetic Resonance, a spectroscopic technique used to determine the structure of molecules.

IR

An abbreviation for infrared spectroscopy, a method for studying molecules by observing their interaction with infrared light to identify chemical bonds and functional groups.

Medium

An environment or substance in which other materials or reactions are hosted or take place, potentially affecting their properties.