In July of 2013, 47% of Australians thought unemployment would increase. Assume in a recent poll, 139 out of 300 said that they thought unemployment would increase. Estimate the proportion of all Australians today who believe unemployment would increase using a 92% confidence interval. P: Parameter What is the correct parameter symbol for this problem? p What is the wording of the parameter in the context of this problem? All Australians today that believe unemployment would increase sumptions
In July of 2013, 47% of Australians thought unemployment would increase. Assume in a recent poll, 139 out of 300 said that they thought unemployment would increase. Estimate the proportion of all Australians today who believe unemployment would increase using a 92% confidence interval. P: Parameter What is the correct parameter symbol for this problem? p What is the wording of the parameter in the context of this problem? All Australians today that believe unemployment would increase sumptions
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:In July of 2013, 47% of Australians thought unemployment would increase. Assume in a recent poll, 139 out
of 300 said that they thought unemployment would increase. Estimate the proportion of all Australians
today who believe unemployment would increase using a 92% confidence interval.
P: Parameter
What is the correct parameter symbol for this problem?
p V
What is the wording of the parameter in the context of this problem?
All Australians today that believe unemployment would increase
A: Assumptions
• Since Select an answer information was collected from each object, what conditions do we need
to check? Check all that apply.
☐o is known.
✓np > 10
✓n(1-p) > 10
On(1-p) > 10
o is unknown.
✔N> 20n
On 30 or normal population.
On(p) > 10
Check those assumptions:
1. np=
2. n(1-P)=
3. N= 1000000
which is > V 10
which is > V
XV
which is > V
If no N is given in the problem, use 1000000
N: Name the procedure
The conditions are met to use a 1-Proportion Z-Interval V
I: Interval and point estimate
The symbol and value of the point estimate on this problem are as follows:
C: Conclusion
10
The interval estimate for ? Vis (
Leave answer as a fraction.
Round endpoints to 3 decimal places.
• We are 92
% confident that the
All Australians today that are believe unemployment would increase
between
% and
%
is
Transcribed Image Text:E
C:
T
R
Select an answer
The percentage of 300 randomly selected Australians today that believe unemployment would increase
All Australians today
Whether or not a Australian today believes unemployment would increase
300 randomly selected Australians today
A randomly selected Australian today that believes unemployment would increase
The percentage of all Australians today that believe unemployment would increase
A randomly selected Australian today
All Australians today that are believe unemployment would increase
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