A study was conducted to find out if a new exercise program was more effective than an old one at improving cardiovascular fitness. Subjects were randomly selected to participate and then randomly assigned to one of the two programs. After six months of exercising, they were given a score based on their fitness performance. Scores ranged from 19 to 73, with higher scores indicating higher performance. Which of the following hypothesis tests would be best for this study?
Paired data test
Independent samples test
Test of two proportions
Chi-squared test of independence
Hypothesis test for regression
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