A serious drought related problem for farmers is the spread of aflatoxin, a toxic substance caused by mold, which contaminates field corn. In higher lev contamination, aflatoxin is potentially hazardous to animal and possibly h health. Two sprays, A and B, have been developed to control aflatoxin in corn, each spray been applied to one field. After three months, seven plots of size were randomly selected within each field, and the amount of aflatoxin, in per billion, present in the corn was recorded. Plot Spray A 23 30 Spray B 13 21 Total 36 51

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Author:Amos Gilat
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Question3
(a)
A serious drought related problem for farmers is the spread of aflatoxin, a highly
toxic substance caused by mold, which contaminates field corn. In higher levels of
contamination, aflatoxin is potentially hazardous to animal and possibly human
health. Two sprays, A and B, have been developed to control aflatoxin in field
corn, each spray been applied to one field. After three months, seven plots of equal
size were randomly selected within each field, and the amount of aflatoxin, in parts
per billion, present in the corn was recorded.
ΣΣΥ
i-1 j-1
Plot
1
2
AWN
5,922
3
4
5
6
7
Total
Spray A
23
30
19
32
29
19
18
170
Spray B
13
21
18
18
12
6
12
100
Total
36
51
37
50
41
25
30
270
(i)
State the assumptions.
(ii) Perform an appropriate statistical analysis using a = 0.01.
Transcribed Image Text:Question3 (a) A serious drought related problem for farmers is the spread of aflatoxin, a highly toxic substance caused by mold, which contaminates field corn. In higher levels of contamination, aflatoxin is potentially hazardous to animal and possibly human health. Two sprays, A and B, have been developed to control aflatoxin in field corn, each spray been applied to one field. After three months, seven plots of equal size were randomly selected within each field, and the amount of aflatoxin, in parts per billion, present in the corn was recorded. ΣΣΥ i-1 j-1 Plot 1 2 AWN 5,922 3 4 5 6 7 Total Spray A 23 30 19 32 29 19 18 170 Spray B 13 21 18 18 12 6 12 100 Total 36 51 37 50 41 25 30 270 (i) State the assumptions. (ii) Perform an appropriate statistical analysis using a = 0.01.
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