(a)
To construct a sketch that describe the testaments formed by combining dose and method.
(a)
Explanation of Solution
Treatment = The treatments are any combinations of dose and administering method.
5 mg | 10 mg | |
Injection | Treatment 1 | treatment 2 |
Skin patch | Treatment 3 | Treatment 4 |
Intravenous Drip | Treatment 5 | Treatment 6 |
We randomly assign all subjects to one of the six treatments.
(b)
To explain the advantages of using larger groups of subjects.
(b)
Explanation of Solution
The advantages of using larger groups of subjects are:
- More accurate results.
- Less variation in the results of a single group.
- More likely to detect an actual different among the different treatments.
(c)
To explain how would you modify experimental design in (a) to take this into account.
(c)
Explanation of Solution
A randomized block experiment groups the experimental units into two or more blocks with the common characteristics and then randomly assigns a treatment to the experimental units in each block.
We can then take the gender into account by blocking the subjects according to gender.
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