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The given statement is:

In a study by A. Elliot et al . , titled " Women's Use of Red Clothing as a Sexual Signal in Intersexual Interaction ", women were studied to determine the effect of apparel color choice based on perceived attractiveness and gender of a new acquaintance. The following experiment is based on the researchers' investigation. Women are randomly assigned to be told that they would be conversing with an attractive male, an unattractive male, an attractive female, or an unattractive female. The women must wear a standardized shirt before the conversation but can choose between red, green, and blue.

Taking into consideration the given designed experiment, the Experimental units are the women that are being studied to determine the effect of apparel color choice based on the perceived attractiveness and gender of a new acquaintance.

The response variable, of the given designed experiment, is the color of shirt chosen by the women before the conversation.

Here, the factors include:

Perceived attractiveness and gender.

Because the women are randomly assigned to be told that they would be conversing with an attractive male, an unattractive male, an attractive female, or an unattractive female.

The two levels of perceived attractiveness are:

1. attractive
2. unattractive

The two levels of gender are:

1. Male
2. Female