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How can I further develop these research questions for a study on the impact COVID-19 has had on standardized test scores (professor feedback was these

How can I further develop these research questions for a study on the impact COVID-19 has had on standardized test scores (professor feedback was "these need additional development, they can not be yes or no questions"). I have to compose research hypotheses for these research questions for my next assignment:

1.Is there a significant mean difference between pre-COVID state standardized test scores and post-COVID state standardized test scores?

2.Is there a relationship between the school students attend and the decline in state standardized test scores?

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