It was found that one tree had died and thA study has been conducted to study the growth performance of 4 species (A1, A2, A3, and A4). Two other factors, Factor B and factor L were also studied. The rounded average heights of the species (m) after 3 years are recorded as follow. L3 АЗ L1 L2 A2 L4 B1 A1 A4 10 8 4 B2 A2 A4 АЗ A1 17 11 13 12 02

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It was found that one tree had died and thA study has been conducted to
study the growth performance of 4 species (A1, A2, A3, and A4). Two
other factors, Factor B and factor L were also studied. The rounded
average heights of the species (m) after 3 years are recorded as follow.
L1
A1
L2
A2
L3
АЗ
L4
A4
B1
10
A2
8
4
B2
A4
A1
13
A4
АЗ
17
12
A2
11
вз
АЗ
10
A1
14
10
B4
A4
АЗ
A2
A1
6 11
a) Perform a complete analysis of variance at 5% level of
8
13
significance and state all conclusions that could be gain
b) For the future study, if the researcher can only study 2 factors,
i)
Which of the factor between factor B and factor L could be
eliminated from the study?
ii)
Why is it so?
Transcribed Image Text:It was found that one tree had died and thA study has been conducted to study the growth performance of 4 species (A1, A2, A3, and A4). Two other factors, Factor B and factor L were also studied. The rounded average heights of the species (m) after 3 years are recorded as follow. L1 A1 L2 A2 L3 АЗ L4 A4 B1 10 A2 8 4 B2 A4 A1 13 A4 АЗ 17 12 A2 11 вз АЗ 10 A1 14 10 B4 A4 АЗ A2 A1 6 11 a) Perform a complete analysis of variance at 5% level of 8 13 significance and state all conclusions that could be gain b) For the future study, if the researcher can only study 2 factors, i) Which of the factor between factor B and factor L could be eliminated from the study? ii) Why is it so?
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