Instruction 11-8
an Agronomist Wants to Compare the Crop Yield

question 131

Short Answer

Instruction 11-8
An agronomist wants to compare the crop yield of three varieties of chickpea seeds.She plants all three varieties of the seeds on each of five different patches of fields.She then measures the crop yield in bushels per acre.Treating this as a randomised block design,the results are presented in the table that follows.
$$\begin{array} { | l | l | l | l | } \hline \text { Fields } & \text { Smith } & \text { Walsh } & \text { Trevor } \\\hline 1 & 11.1 & 19.0 & 14.6 \\\hline 2 & 13.5 & 18.0 & 15.7 \\\hline 3 & 15.3 & 19.8 & 16.8 \\\hline 4 & 14.6 & 19.6 & 16.7 \\\hline 5 & 9.8 & 16.6 & 15.2 \\\hline\end{array}$$
-Referring to Instruction 11-8,what are the degrees of freedom of the randomised block F test for the difference in the means at a level of significance of 0.01?

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Definitions:

PTSD

Post-traumatic Stress Disorder; a mental health condition triggered by experiencing or witnessing a terrifying event, characterized by severe anxiety, nightmares, and flashbacks.

Munchausen-by-proxy Syndrome

A psychiatric disorder where a caretaker fabricates or induces illness in another person, typically a child, to gain attention or sympathy.

Munchausen Syndrome

A psychiatric disorder where a person repeatedly and deliberately acts as if they have a physical or mental illness when they are not really sick.

Nyctophobia

An intense fear of darkness or the night, which can cause significant psychological distress.