Currently patrons at the library speak at an average of 67 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 61 people speaking at the library. Their average decibel level was 64.9 and their standard deviation was 8. What can be concluded at the the αα = 0.05 level of significance?For this study, we should use Correct The null and alternative hypotheses would be: H0:H0: Correct Correct Correct H1:H1: Correct Incorrect Correct < The test statistic Correct = (please show your answer to 3 decimal places.) The p-value = (Please show your answer to 4 decimal places.)The p-value is ααBased on this, we should the null hypothesis.Thus, the final conclusion is that ...The data suggest that the population mean decibal level has not significantly decreased from 67 at αα = 0.05, 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.

For the given data Perform t test for one sample mean

Answered: installation 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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Currently patrons at the library speak at an average of 67 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 61 people speaking at the library. Their average decibel level was 64.9 and their standard deviation was 8. What can be concluded at the the αα = 0.05 level of significance?

For this study, we should use Correct

The null and alternative hypotheses would be:

H0:H0: Correct Correct Correct

H1:H1: Correct Incorrect Correct

The test statistic Correct = (please show your answer to 3 decimal places.)

The p-value = (Please show your answer to 4 decimal places.)
The p-value is αα
Based on this, we should the null hypothesis.
Thus, the final conclusion is that ...
- The data suggest that the population mean decibal level has not significantly decreased from 67 at αα = 0.05, 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.

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