The parents of some students remarked that they could tell the difference between Crunchem Chips and Crispy Chips.
How might students design a study if the students were a. elementary-grade students or b. middle-grade students?
a. Choose the statement that best describes how elementary-grade students would design the study.
A. Students would blindfold all of the parents in this class and another class and have them taste each product.
B. Students would blindfold all of the parents in the class and have them taste each product.
C. Students would randomly select and blindfold parents in this class and another class and have them taste
each product.
D. Students would randomly select and blindfold parents in the class and have them taste each product.

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UpStudy AI · Accepted Answer

1. The study compares two types of chips based on the parent’s taste perception.

2. Since the study involves elementary-grade students, the experiment is likely to be conducted within their own class rather than involving multiple classes, so that the simplicity of the procedure is maintained.

3. The design needs to incorporate a method to eliminate bias such as blindfolding during tasting. In addition, to reduce potential selection bias among parents in the class, random selection should be used.

4. Among the choices provided:

- **Option A** requires blindfolding all the parents in both the class and another class.
   - **Option B** involves blindfolding all parents in the class but does not include random selection.
   - **Option C** includes blindfolding and random selection, but across two classes.
   - **Option D** involves randomly selecting and blindfolding parents in the class alone.

5. Considering the constraints and the typical simplicity expected in studies designed by elementary-grade students, the most appropriate design is described by:

$$
   \text{Randomly select and blindfold parents in the class and have them taste each product.}
   $$

Thus, the correct answer is **D**.
The students should randomly select and blindfold parents in their class and have them taste each type of chip to compare them.

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