1. A cereal manufacturer seeks to test their newest product against a competitor’s. A group of 100 children was asked to evaluate each brand, and then to express a preference. To guard against bias, neither the children, nor the technicians serving them, were aware of the order in which they were fed each brand.

- What is the population?

- What is the sample?

- Is the study observational or experimental? Justify your answer.

- What are the independent and dependent variables?

- For each of those variables, what level of measurement was used to obtain data from these variables?

- Classify those variables as either attribute or numerical.

(Points :10)

- What is the population?

- What is the sample?

- Is the study observational or experimental? Justify your answer.

- What are the independent and dependent variables?

- For each of those variables, what level of measurement was used to obtain data from these variables?

- Classify those variables as either attribute or numerical.

(Points :10)