Currently patrons at the library speak at an average of 61 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 57 people speaking at the library. Their average decibel level was 58 and their standard deviation was 10. What can be concluded at the the αα = 0.10 level of significance? For this study, we should use t-test for population mean The null and alternative hypotheses would be: H0:H0: Incorrect >, <, = or not equal to also provide the ? H1:H1: Incorrect >,<, = or not equal to also provide the ? The test statistic tc =(please show your answer to 3 decimal places.) The p-value = ? (Please show your answer to 4 decimal places.) e.Thus, the final conclusion is that .. a. The data suggest the populaton mean has significantly decreased from 61 at αα = 0.10, 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. b. The data suggest the population mean has not significantly decreased from 61 at αα = 0.10, 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. c. The data suggest that the population mean decibal level has not significantly decreased from 61 at αα = 0.10, 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.

Name: Currently patrons at the library speak at an average of 61 decibels. W
Uploaded: 2024-03-20T07:07:12.000Z
Channel: Bartleby
Description: Currently patrons at the library speak at an average of 61 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 57 people speaking at the li

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

See similar textbooks

Related questions

Topic Video

Question

Currently patrons at the library speak at an average of 61 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 57 people speaking at the library. Their average decibel level was 58 and their standard deviation was 10. What can be concluded at the the αα = 0.10 level of significance?

For this study, we should use t-test for population mean
The null and alternative hypotheses would be:

H0:H0: Incorrect >, <, = or not equal to also provide the __?__

H1:H1: Incorrect >,<, = or not equal to also provide the __?__

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

e.Thus, the final conclusion is that ..

- a. The data suggest the populaton mean has significantly decreased from 61 at αα = 0.10, 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.
- b. The data suggest the population mean has not significantly decreased from 61 at αα = 0.10, 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.
- c. The data suggest that the population mean decibal level has not significantly decreased from 61 at αα = 0.10, 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.

Expert Solution

Trending now

This is a popular solution!

Step by step

Solved in 2 steps with 2 images

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

$Hypothesis Tests and Confidence Intervals for Means$

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, statistics and related others by exploring similar questions and additional content below.

Similar questions