Simple random samples of 100 high school students are sampled from each grade level,for a total of 400 high school students.They are asked to rate the performance of the president of the United States on a scale from 1 to 5 (1 = poor and 5 = excellent).The results are presented below. What would be the null hypothesis for a chi-square test based on these data?

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Simple random samples of 100 high school students are sampled from each grade level,for a total of 400 high school students.They are asked to rate the performance of the president of the United States on a scale from 1 to 5 (1 = poor and 5 = excellent).The results are presented below.  What would be the null hypothesis for a chi-square test based on these data?

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The Answer of Simple random samples of 100 high school students are sampled from each grade level,for a total of 400 high school students.They are asked to rate the performance of the president of the United States on a scale from 1 to 5 (1 = poor and 5 = excellent).The results are presented below.  What would be the null hypothesis for a chi-square test based on these data?

Simple Random Samples of 100 High School Students Are Sampled