Question: With standards getting stricter over time, it is possible that even if it the current standard is not contained in the confidence interval a future

  1. With standards getting stricter over time, it is possible that even if it the current standard is not contained in the confidence interval a future stricter standard might be. What concerns might you have if this were contained in your confidence interval? What can you interpret from this?
90% confidence interval results:
Variable Sample Mean Std. Err. DF L. Limit U. Limit
Daily Mean PM2.5 Concentration 2018 6.8146552 0.33924525 115 6.2521147 7.3771957
2018 PM.2 data confidence interval (6.25,7.38)
Method 1 (6.25,7.38)
Method 2 6.8150.565

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