Problem 10.5.1
Week
Rat 1 2 3 4 \\
1 29 28 25 33 \\
2 33 30 23 31 \\
3 25 34 33 41 \\
4 18 33 29 35 \\
5 25 23 17 30 \\
6 24 32 29 22 \\
7 20 23 16 31 \\
8 28 21 18 24 \\
9 18 23 22 28 \\
10 25 28 29 30 \\