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2. Dr. Roh and his students want to test the average height of basketball players in NBA. We thought the average height of all the

2. Dr. Roh and his students want to test the average height of basketball players in NBA. We thought the average height of all the NBA players are not 7 feet. To test this, his research team collect the data from 40 players. And the specific data looks as below; N = 40 X = 6.45 s = 0.31 Q: Test the null hypothesis that the average height of all the NBA players are 7 feet. (Ho: u = 7) [2 points ]

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