Currently patrons at the library speak at an average of 60 decibels. Will this average decline after theinstallation of a new computer plug in station? After the plug in station was built, the librarian randomlyrecorded 51 people speaking at the library. Their average decibel level was 57.8 and their standard deviationwas 6. What can be concluded at the the a= 0.01 level of significance?a. For this study, we should use t-test for a population meanb. The null and alternative hypotheses would be:Ho: HoΗ: μεc. The test statistic tC6060-2.619 (please show your answer to 3 decimal places.)(Please show your answer to 4 decimal places.)d. The p-value =e. The p-value is?af. Based on this, we should Select an answer the null hypothesis.g. Thus, the final conclusion is that ...O The data suggest the population mean has not significantly decreased from 60 at a = 0.01, sothere is statistically significant evidence to conclude that the population mean decibel level atthe library has not decreased since the plug in station was built.O The data suggest that the population mean decibal level has not significantly decreased from 60at a = 0.01, so there is statistically insignificant evidence to conclude that the population meandecibel 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 thereis statistically significant evidence to conclude that the population mean decibel level at thelibrary has decreased since the plug in station was built.Hint:Helpful Videos: Calculations [+] Setup [+] Interpretations [+]Help

The mean = 57.8The standard deviation = S = 6The sample size [n] =51Use t-distribution.

Answered: tallation of a new computer plug in…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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