Currently patrons at the library speak at an average of 68 decibels. Will this average decline after the installation of a new computer plug in station? After the plug in station was built, the...

Currently patrons at the library speak at an average of 68 decibels. Will this average decline after the installation of a new computer plug in station? After the plug in station was built, the librarian randomly recorded 60 people speaking at the library. Their average decibel level was 63.5 and their standard deviation was 15. What can be concluded at the the αα = 0.05 level of significance?The null and alternative hypotheses would be:

 H0:H0:  Mean =   __?__orrect

 H1:H1:  Mean <>

1. The test statistic t=  __?__ (please show your answer to 3 decimal places.)




1. The p-value = __?__ (Please show your answer to 4 decimal places.)