Pages Currently patrons at the library speak at an average of 60 decibels. Will this average dectine after the installation of a new computer plug in station? After the plug in station was built, the...

Extracted text: Pages Currently patrons at the library speak at an average of 60 decibels. Will this average dectine after the installation of a new computer plug in station? After the plug in station was built, the librarian randomly recorded 43 people speaking at the library. Their average decibel level was 55.2 and their standard deviation was 13. What can be concluded at the the a = 0.01 level of significance? Files Syllabus Outcomes a. For this study, we should use Select an answer b. The null and alternative hypotheses would be: Modules Ho: ? v Select an answer v Conferences Collaborations H: ? vSelect an answer v Google Drive C. The test statistic ? v- (please show your answer to 3 decimal places.) Office 365 d. The p-value = e. The p-value is ? va f. Based on this, we should Select an answer v the null hypothesis. g. Thus, the final conclusion is that ... (Please show your answer to 4 decimal places.) Student Course Evaluations O The data suggest that the population mean decibal level has not significantly decreased from 60 at a = 0.01, so there is statistically insignificant evidence to conclude that the population mean decibel level at the library has decreased since the plug in station was built. O The data suggest the populaton mean has significantly decreased from 60 at a = 0.01, so there is statistically significant evidence to conclude that the population mean decibel level at the library has decreased since the plug in station was built. O The data suggest the population mean has not significantly decreased from 60 at a = 0.01, so there is statistically significant evidence to conclude that the population mean decibel level at the library has not decreased since the plug in station was built. Submit Ouaction P Type here to search