30 students were given a two-hour exam and their scores were determined. After the exam, the students were subjected to a 30-minute physical exercise and then took another two-hour exam. 1. Identify the variables and their data types. Indicate whether independent or dependent. 2. Identify the t-test to be used.

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Q: The mode for the data : 22,17,18,25,22,52,27,33 is equal to

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