Answer:
Lighting significantly affects performance
Explanation:
In this study, Ellen took two groups and applied the same IQ test to both of them. The only variable that changed between the groups was the level of lighting in the room. The first group was placed in a room with very bright lights and the second group was placed in a room with more normal lighting.
Individuals in the first group did better in the IQ test and she found that the difference between the two scores was statistically significant.
We say that a result is <u>"statistically significant" when it is not likely to occur randomly but rather is likely to be attributable to a specific cause.</u>
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So we can say that <u>the better performance in the first group tests were not likely to occur randomly but it can be attributable to a specific cause. </u>
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<u>Since the only variable that was different between the groups was the lightning, we can conclude that lighting significantly affects performance. </u>
The primary focus of US national security policy is to protect the citizens and the nation. Option C is correct.
<h3>What is US national security?</h3>
National security of the United Nations is defined as the collective term that covering the policies of both the United States's national defense and foreign relations.
Nowadays, the primary focus of the United States is to focus on the security because the government of U.S. gave the guarantee to their nation to give the protection and the fundamental and standing needs.
Therefore, option C is correct.
Learn more about the security, refer to:
brainly.com/question/6454972
Its actually an totem pole which represents family members from a past, and ancestors.
Answer:
c
Explanation:
hope it helps it's correct just use our common sense