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skelet666 [1.2K]
3 years ago
14

An experiment compared the adhesion of 2 types of paint, A and B, to 3 types of metal, 1, 2, and 3, used in automobiles. Thirty

sheets of metal were used in the experiment: 10 of Metal 1, 10 of Metal 2, and 10 of Metal 3. Half of each metal type will receive paint A and the other half will receive paint B. The adhesion of the paints was measured, and the measures were compared. How many experimental units are in the experiment?
A. 2

B.3


C. 10


D. 30


E. 60
Advanced Placement (AP)
1 answer:
rodikova [14]3 years ago
5 0

Answer:

<em></em>

  • <em>There are 30 experimental units in the experiment, which are the 30: the thirty sheets of metal.</em>

Explanation:

This table shows you how the <em>experimental</em> units, <em>sheets of metal</em>, were treated:

               Metal 1         Metal 2       Metal 3       Total

Paint A         5                     5               5                15

Paint B         5                     5               5                15

Total            10                   10              10               30

Fifteen sheets (units) were treated with <em>paint A</em>: 5 of metal 1, 5 of metal 2, and 5 of metal 3.

Fifteen sheets (units) were treated with <em>paint B</em>: 5 of metal 1, 5 of metal 2, and 5 of metal 3.

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