Question: The Z-distribution will be used to create the confidence interval for the mean. Why are we able to use this distribution for this problem? Create

  1. The Z-distribution will be used to create the confidence interval for the mean. Why are we able to use this distribution for this problem?
  2. Create your confidence interval and report what it is.
  3. The current ACL recovery program averages 320 days to fully recover. Based on the confidence interval you constructed, where does this value fall?
  4. Based on the confidence interval, do you think we have enough evidence from a statistical standpoint to say the new procedure is significantly better than the current procedure? Why or why not?

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