The Table Below Gives Beverage Preferences for Random Samples of Teens

question 9

Multiple Choice

The table below gives beverage preferences for random samples of teens and adults. ​ We are asked to test for independence between age (i.e., adult and teen) and drink preferences.With a .05 level of significance, the critical value for the test is

• A) 5.991.
• B) 7.815.
• C) 14.067.
• D) 15.507.

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Definitions:

Specific Rotation

A measure of the amount a substance rotates the plane of polarized light, specific to its molecular structure and concentration.

Dextrorotatory

Describes a substance that rotates the plane of polarized light to the right, or clockwise, as seen by an observer towards the light source.

Levorotatory

Describing a substance that rotates the plane of polarized light to the left or counterclockwise.

Racemic Mixture

A mixture containing equal amounts of left- and right-handed enantiomers of a chiral molecule, making it optically inactive.