Q1. An experiment is designed to study pigment dispersion in paint. Four different mixes of
a particular pigment (A, B, C & D) are studied. The procedure consists of preparing a particular
mix and then applying that mix to a panel by three application methods (brushing, spraying,
and rolling). The response measured is the percentage reflectance of the pigment. Three days
are required to run the experiment, and the data obtained as follow. Consider that the
experiment is conducted in RCBD with Day as blocks, application method as main plot factor.
What will be your appropriate design, analyze the data and draw conclusions at 5% level of
significance.
Answers
The correct question may be like:
We are conducting an experiment to study how pigment is dispersed in paint. We will be using four different mixes of a particular pigment (A, B, C & D) and applying them to a panel using three different methods (brushing, spraying, and rolling). We will measure the percentage reflectance of the pigment as our response. The experiment will take three days to complete and we will be using a design called RCBD with Day as blocks and application method as the main plot factor. After collecting the data, we will analyze it and draw conclusions at a 5% level of significance.
"What is the purpose of the experiment and what design will be used to conduct it?
The purpose of the experiment is to study how pigment is dispersed in paint by using four different mixes of a particular pigment (A, B, C & D) and applying them to a panel using three different methods (brushing, spraying, and rolling). The percentage reflectance of the pigment will be measured as the response. The experiment will take three days to complete and a design called RCBD with Day as blocks and application method as the main plot factor will be used. After collecting the data, it will be analyzed and conclusions will be drawn at a 5% level of significance.
1. The experiment is being conducted to study how pigment is dispersed in paint.
2. Four different mixes of a particular pigment (A, B, C & D) will be used and applied to a panel using three different methods (brushing, spraying, and rolling).
3. The percentage reflectance of the pigment will be measured as the response.
4. The experiment will take three days to complete.
5. A design called RCBD (Randomized Complete Block Design) will be used to conduct the experiment.
6. Day will be used as blocks and application method will be the main plot factor.
7. After collecting the data, it will be analyzed.
8. Conclusions will be drawn at a 5% level of significance."
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