Q 25.

Question

Child-Proof Bottles. Designing medication packaging that resists opening by children, but yields readily to adults presents numerous challenges. In the article "Painful Design" (American Scientist, Vol. 93, No. 2, pp. 113-118 ), H. Petroski examined the packaging used for Aleve, a brand of pain reliever. Three new container designs were given to a panel of children aged 42 months to 51 months. For each design, the children were handed the bottle, shown how to open it, and then left alone with it. If more than 20 % of the children succeeded in opening the bottle on their own within 10 minutes, even if by using their teeth, the bottle failed to qualify as child resistant.

Identify the

a. experimental units. b. response variable.

c. factor (s). d. levels of each factor.

e. treatments.

Step-by-Step Solution

Verified

Answer

Part (a) Children

Part (b) children will open or not the bottle.

Part (c) container designs

Part (d) three levels of container designs.

Part (e) three new container designs

1Part (a) Step 1. Given information.

The given statement is:

A panel of children aged 42 months to 51 months was given three new container designs.

Each child was given a bottle and instructed how to open it before being left alone with it.

The bottle failed to qualify as child-resistant if more than 20% of the children were able to open it on their own within 10 minutes, even if it was opened using their teeth.

2Part (a) Step 2. Identify the experimental units.

Taking into consideration the given designed experiment, the Experimental units are the children because this experiment is conducted on children aged 42 months to 51 months.

3Part (b) Step 1. Identify the response variable.

The response variable is to find out if the children will open or not the bottle they were handed.

4Part (c) Step 1. Identify the factor.

Here, the factors include: