Exhibit 20

question 34

Multiple Choice

Exhibit 20.11.A wine magazine wants to know if chefs can tell the difference between duck liver pate and wet dog food.Eighteen chefs were asked to rate both the pate and dog food on a scale from 1 to 5,with 1 corresponding to "inedible" and 5 to "very tasty".The results are shown in the following table. Refer to Exhibit 20.11.Using the p-value approach and ,the appropriate conclusion is:

• A)Reject the null hypothesis,conclude chefs prefer pate
• B)Reject the null hypothesis,conclude there is a difference in the preference between pate and dog food
• C)Reject the null hypothesis,cannot conclude there is a difference in the preference between pate and dog food
• D)Reject the null hypothesis,conclude nothing

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Definitions:

Singlet

A term referring to a quantum state of an atom or molecule where all electron spins are paired, resulting in zero net spin.

Doublet

A term generally used in spectroscopy to describe a pattern of two closely spaced spectral lines or peaks, indicating the presence of two interacting nuclear spins.

Spectral Data

Refers to information obtained from the analysis of the spectrum of light that a substance emits or absorbs, which can reveal properties about the substance's composition and structure.

IR

Infrared spectroscopy, a technique used to identify and study chemicals through the absorption of light in the infrared spectrum.