johnson3709 johnson3709
  • 10-04-2024
  • Mathematics
Answered

The mean score on a statewide science test is 72, with standard deviation 12. Hailey believes that the scores in her school are considerably higher than the state average. A random sample of 100 students from Hailey’s school showed a mean score of 76. Is Hailey correct in her belief? Explain.



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