Curren tly patrons at the library speak at an average of 61 decibels. Will this average dedine after the installation of a new computer plug in station? After the plug in station was built, the librarian randomly recorded 41 people speaking at the library. Their average decibel level was 57.6 and their standard deviation was 20. What can be conduded at the the a 0.10 level of significance? a. For this study, we should use z-test for a population proportion b. The null and alternative hypotheses would be: Họ: P Select an answer H1: p v Select an answer c. The test statistic ? - (please show your answer to 3 decimal places.) d. The p-value - (Please show your answer to 4 decimal places.) e. The p-value is ? a f. Based on this, we should Select an answer g. Thus, the final condusion is that... | the null hypothesis. O The data suggest the populaton mean has significantly decreased from 61 at a = 0.10, so there is statistically significant evidence to condude that the population mean decibel level at the librar has decreased since the plug in station was built. O The data suggest the population mean has not significantly decreased from 61 at a = 0.10, so there is statistically significant evidence to condude that the population mean decibel level at the 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 61 at a = 0.10, so there is statistically insignificant evidence to condude that the population mean decibel level at the library has decreased since the plug in station was built.
Curren tly patrons at the library speak at an average of 61 decibels. Will this average dedine after the installation of a new computer plug in station? After the plug in station was built, the librarian randomly recorded 41 people speaking at the library. Their average decibel level was 57.6 and their standard deviation was 20. What can be conduded at the the a 0.10 level of significance? a. For this study, we should use z-test for a population proportion b. The null and alternative hypotheses would be: Họ: P Select an answer H1: p v Select an answer c. The test statistic ? - (please show your answer to 3 decimal places.) d. The p-value - (Please show your answer to 4 decimal places.) e. The p-value is ? a f. Based on this, we should Select an answer g. Thus, the final condusion is that... | the null hypothesis. O The data suggest the populaton mean has significantly decreased from 61 at a = 0.10, so there is statistically significant evidence to condude that the population mean decibel level at the librar has decreased since the plug in station was built. O The data suggest the population mean has not significantly decreased from 61 at a = 0.10, so there is statistically significant evidence to condude that the population mean decibel level at the 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 61 at a = 0.10, so there is statistically insignificant evidence to condude that the population mean decibel level at the library has decreased since the plug in station was built.
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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Transcribed Image Text:Currently patrons at the library speak at an average of 61 decibels. Will this average dedine after the
installation of a new computer plug in station? After the plug in station was built, the librarian randomly
recorded 41 people speaking at the library. Their average decibel level was 57.6 and their standard deviation
was 20. What can be conduded at the the a = 0.10 level of significance?
a. For this study, we should use z-test for a population proportion v
b. The null and alternative hypotheses would be:
Ho: P v Select an answer
H1: p v| select an answer v
c. The test statistic ? v
(please show your answer to 3 decimal places.)
=
d. The p-value =
e. The p-value is ? va
f. Based on this, we should Select an answer
g. Thus, the final condusion is that ...
(Please show your answer to 4 decimal places.)
the null hypothesis.
O The data suggest the populaton mean has significantly decreased from 61 at a = 0.10, so there is
statistically significant evidence to condude that the population mean decibel level at the library
has decreased since the plug in station was built.
The data suggest the population mean has not significantly decreased from 61 at a = 0.10, so
there is statistically significant evidence to condude that the population mean decibel level at
the 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 61
at a = 0.10, so there is statistically insignificant evidence to condude that the population mean
decibel level at the library has decreased since the plug in station was built.
%3D
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