A sports enthusiast would like to determine if the average number of penalty minutes per game for teams in the National Hockey League is greater than 12 minutes. A sample of 30 games was taken, and the number of penalty minutes in each game was recorded.  Select the appropriate hypotheses to be tested. Ho:μ=12Ho:μ=12Ha:μ>12Ha:μ>12 Ho:μ=12Ho:μ=12Ha:μ≠12Ha:μ≠12 Ho:¯y=12Ho:y¯=12Ha:¯y≠12Ha:y¯≠12 Ho:¯y=12Ho:y¯=12Ha:¯y>12

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A sports enthusiast would like to determine if the average number of penalty minutes per game for teams in the National Hockey League is greater than 12 minutes. A sample of 30 games was taken, and the number of penalty minutes in each game was recorded. 

Select the appropriate hypotheses to be tested.

  • Ho:μ=12Ho:μ=12
    Ha:μ>12Ha:μ>12
  • Ho:μ=12Ho:μ=12
    Ha:μ≠12Ha:μ≠12
  • Ho:¯y=12Ho:y¯=12
    Ha:¯y≠12Ha:y¯≠12
  • Ho:¯y=12Ho:y¯=12
    Ha:¯y>12
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