According to a travel web site, workers in a certain country lead the world in vacation days, averaging 17.16 days per year. The following data show the number of paid vacation days for a random sample of 20 workers from this country. Complete parts a through c below. Round two decimal places as needed 25 58 26 9 6 27 28 23 2 18 13 32 16 35 24 30 25 35 32 A) Construct a 99% confidence interval to estimate the average number of paid vacation days for workers from this country The 99% confidence interval to estimate the average number of paid vacation days forworkers from this country is from days to days B) Do the results from this sample validate the websites findings? 田 a) Since the population mean, 17.16 , is contained within the 99% confidence interval, it can be said with 99% confidence that the sample validates the web site's findings b) Since the population mean, 17.16 , is contained within the 99% confidence interv al, it can be said with 99% confidence that the sample does not validate the website's findings c) Since the population mean, 17.16, is not contained within the 99% confidence interval, it can be said with 99% confidence that the sample does not validate the web site's findings. D) Since the population mean, 17.16, is not contained within the 99% confidence interval, it can be said with 99% confidence that the sample validates the website's findings C) What assumptions need to be made about these populations a) The only assumption needed is that the population distribution is approximately uniform b) The only assumption needed, is that the population distribution is approximately normal c) The only assumption needed is that the population standard deviation is known d) No assumptions are required
According to a travel web site, workers in a certain country lead the world in vacation days, averaging 17.16 days per year. The following data show the number of paid vacation days for a random sample of 20 workers from this country. Complete parts a through c below. Round two decimal places as needed 25 58 26 9 6 27 28 23 2 18 13 32 16 35 24 30 25 35 32 A) Construct a 99% confidence interval to estimate the average number of paid vacation days for workers from this country The 99% confidence interval to estimate the average number of paid vacation days forworkers from this country is from days to days B) Do the results from this sample validate the websites findings? 田 a) Since the population mean, 17.16 , is contained within the 99% confidence interval, it can be said with 99% confidence that the sample validates the web site's findings b) Since the population mean, 17.16 , is contained within the 99% confidence interv al, it can be said with 99% confidence that the sample does not validate the website's findings c) Since the population mean, 17.16, is not contained within the 99% confidence interval, it can be said with 99% confidence that the sample does not validate the web site's findings. D) Since the population mean, 17.16, is not contained within the 99% confidence interval, it can be said with 99% confidence that the sample validates the website's findings C) What assumptions need to be made about these populations a) The only assumption needed is that the population distribution is approximately uniform b) The only assumption needed, is that the population distribution is approximately normal c) The only assumption needed is that the population standard deviation is known d) No assumptions are required
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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According to a travel website, workers in a certain country lead the world in vacation days, averaging
17.16 days per year. The following data show the number of paid vacation days for a random sample of
20 workers from this country. Complete parts a through c below. Round two decimal places as needed
25
2.
18
24
30
26
32
25
35 58
13
16
9.
27
28
23
32 35
A) Construct a 99% confidence interval to estimate the average number of paid vacation days
for workers from this country
The 99% confidence interval to estimate the average number of paid vacation days forworkers
from this country is from
days to
days
B) Do the results from this sample validate the websites findings?
田
a) Since the population mean, 17.16, is contained within the 99% confidence interval, it can be said with 99%
confidence that the sample validates the website's findings
Since the population mean, 17.16, is contained within the 99% confidence interval, it can be said with 99%
b)
confidence that the sample does not validate the website's findings
c) Since the population mean, 17.16, is not contained within the 99% confidence interval, it can be said with
99% confidence that the sample does not validate the web site's findings.
D) Since the population mean, 17.16, is not contained within the 99% confidence interval, it can be said with
99% confidence that the sample validates the website's findings
C) What assumptions need to be made about these populations
a) The only assumption needed is that the population distribution is approximately uniform
b) The only assumption needed, is that the population distribution is approximately normal
c) The only assumption needed is that the population standard deviation is known
d) No assumptions are required
D Focus
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