Instruction 11-7
an Agronomist Wants to Compare the Crop Yield

question 9

Multiple Choice

Instruction 11-7
An agronomist wants to compare the crop yield of three varieties of chickpea seeds. She plants 15 fields, five with each variety. She then measures the crop yield in bushels per acre. Treating this as a completely randomised design, the results are presented in the table that follows.
$\begin{array}{rrrr}\text { Trial}& \text { Smith }& \text { Walsh}& \text { Trevor }\\\hline1 & 11.1 & 19.0 & 14.6 \\2 & 13.5 & 18.0 & 15.7 \\3 & 15.3 & 19.8 & 16.8 \\4 & 14.6 & 19.6 & 16.7 \\5 & 9.8 & 16.6 & 15.2\end{array}$
-Referring to Instruction 11-7,the null hypothesis for the randomised block F test for the difference in the means is

• A) H 0 : M Smith = M Walsh = M Trevor.
• B) H 0 : \(\mu\) Smith = \(\mu\) Walsh = \(\mu\) Trevor.
• C) H 0 : \(\mu\) Field 1 = \(\mu\) Field 2 = \(\mu\) Field 3 = \(\mu\) Field 4 = \(\mu\) Field 5.
• D) H 0 : M Field 1 = M Field 2 = M Field 3 = M Field 4 = M Field 5.

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Definitions:

Volcanic Ash

Fine particles of rock and mineral matter expelled from a volcano during eruptions, which can have significant effects on climate, air quality, and aviation safety.

Radiocarbon Dating

A method for determining the age of an object containing organic material by using the properties of radiocarbon, a radioactive isotope of carbon.

Sedimentary Layer

A layer of material, often deposited by water, wind, or ice, that forms part of the sedimentary rock sequence.