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In a longitudinal study 43 football players (f) from a sample of 98 obtain a concussion...

In a longitudinal study 43 football players (f) from a sample of 98 obtain a concussion during their career. A further 85 hockey players (h) from a sample of 142 obtain a concussion during their career.

Part A. Build a 95% confidence interval for the difference between the football and hockey players.

Part B. Is there good evidence that concussion rate is significantly lower for football players than for hockey players? Perform a test of hypothesis to answer the question.

Math   Statistics-And-Probability   
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