Currently patrons at the library speak at an average of 61 decibels. Will this average increase after the installation of a new computer plug in station? After the plug in station was built, the librarian randomly recorded 66 people speaking at the library. Their average decibel level was 67.5 and their standard deviation was 17. What can be concluded at the the αα = 0.10 level of significance?    The test statistic =  (please show your answer to 3 decimal places.) The p-value =  (Please show your answer to 4 decimal places.)

Question

Currently patrons at the library speak at an average of 61 decibels. Will this average increase after the installation of a new computer plug in station? After the plug in station was built, the librarian randomly recorded 66 people speaking at the library. Their average decibel level was 67.5 and their standard deviation was 17. What can be concluded at the the αα = 0.10 level of significance?

  

  1. The test statistic =  (please show your answer to 3 decimal places.)
  2. The p-value =  (Please show your answer to 4 decimal places.)

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