A group of researchers conducted a study to examine whether the color red can adversely affect intellectual performance. They based their hypothesis on a theory that red is associated with failure, such as when red ink is used to correct errors. To test the hypothesis, they asked 20 high school students to take a 20-item IQ test and randomly assigned them to one of two experimental conditions. In one condition, a large red rectangle appeared on the cover page of the test. In the other condition, the rectangle was a gray color. The results are shown in the accompanying figure, which includes standard error bars. Explain what the standard error bars mean, using one of the error bars as an example, to a person who understands mean and standard deviation, but knows nothing else about statistics. LOADING... Click the icon to see the figure with the results. Question content area bottom Part 1 Choose the correct answer below. A. The error bars represent the standard deviation of the distribution of means, known as the standard error. For example, the error bar for gray shows that a good interval for the mean of the distribution of means is between 14 and