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Twenty three volunteers rated their stress level for coding (programming) in a large dinning hall and then in a small quiet room to understand whether

Twenty three volunteers rated their stress level for coding (programming) in a large dinning hall and then in a small quiet room to understand whether there is any statistically significant difference in their stress level when being placed in different programming contexts. Determine the appropriate degree of freedom. (Choose one: 46, 45, 22, 44, or 23)

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