Question
In: Statistics and Probability
Do you wear a seatbelt? A study would like to estimate the population proportion of 12th...
Do you wear a seatbelt? A study would like to estimate the population proportion of 12th graders who wear a seatbelt. To do so, a random sample of 1168 12th graders were selected and 710 claimed they use a seatbelt.
a) Define the parameter p:
b) Provide a 99% confidence interval to estimate the parameter:
Solutions
Expert Solution
TOPIC:Confidence interval for the population proportion.
orchestra answered 1 year agoRelated Solutions
The university would like to conduct a study to estimate the true proportion of all university...
The university would like to conduct a study to estimate the
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The university would like to conduct a study to estimate the true proportion of all university...
The university would like to conduct a study to
estimate the true proportion of all university students who have
student loans. According to the study, in a random sample of 215
university students, 86 have student loans.
(a) Construct a 99% confidence interval for
estimating the true proportion of all university students who have
student loans (2 marks)
(b) Provide an interpretation
of the confidence interval in part (a).
(1mark)
(c) Conduct an appropriate
hypothesis test, at the 1% level...
The university would like to conduct a study to estimate the true proportion of all university...
The university would like to conduct a study to estimate the
true proportion of all university students who have student loans.
According to the study, in a random sample of 215 university
students, 86 have student loans. (a) Construct a 95% confidence
interval for estimating the true proportion of all university
students who have student loans (b) Provide an
interpretation of the confidence interval in part (a). (1mark) (c)
Conduct an appropriate hypothesis test, at the 5% level of
significance...
The university would like to conduct a study to estimate the true proportion of all university...
The university would like to conduct a study to estimate the
true proportion of all university students who have student loans.
According to the study, in a random sample of 215 university
students, 86 have student loans. (a) Construct a 99% confidence
interval for estimating the true proportion of all university
students who have student loans (b) Provide an
interpretation of the confidence interval in part (a). (1mark) (c)
Conduct an appropriate hypothesis test, at the 1% level of
significance...
the university would like to conduct a study to estimate the true proportion of all university...
the university would like to conduct a study to estimate
the true proportion of all university students who have student
loans. According to the study, in a random sample of 215 university
students, 86 have student loans.
(a) Construct a 95% confidence interval for estimating
the true proportion of all university students who have student
loans
(b) Provide an interpretation of the confidence interval
in part (a).
(c) Conduct an appropriate hypothesis
test, at the 5% level of significance to...
The university would like to conduct a study to estimate the true proportion of all university...
The university would like to conduct a study to estimate
the true proportion of all university students who have student
loans. According to the study, in a random sample of 215 university
students, 86 have student loans.
(a) Construct a 95% confidence interval for estimating
the true proportion of all university students who have student
loans (2 marks)
(b) Provide an interpretation of the confidence interval
in part (a). (1mark)
(c) Conduct an appropriate hypothesis
test, at the 5% level...
The university would like to conduct a study to estimate the true proportion of all university...
The university would like to conduct a study to
estimate the true proportion of all university students who have
student loans. According to the study, in a random sample of 217
university students, 88 have student loans.
(a) Construct a 99% confidence interval for
estimating the true proportion of all university students who have
student loans
(b) Provide an interpretation
of the confidence interval in part (a).
(c) Conduct an appropriate
hypothesis test, at the 1% level of significance to...
The university would like to conduct a study to estimate the true proportion of all university...
The university would like to conduct a study to estimate the
true proportion of all university students who have student loans.
According to the study, in a random sample of 215 university
students, 86 have student loans.
(a) Construct a 95% confidence interval for estimating the true
proportion of all university students who have student loans
(b) Provide an interpretation of the confidence interval in part
(a). (1mark)
(c) Conduct an appropriate hypothesis test, at the 5% level of
significance...
1) One Proportion (8.2) Nationally, roughly 14% of adults fail to wear their seatbelt on...
1) One
Proportion
(8.2)
Nationally, roughly 14% of adults fail to wear their seatbelt on
every car trip. Suppose we find that 6 of 31 drivers in Rochester
are not wearing their seatbelt.
a) What sample proportion of drivers weren’t wearing their
belt?
b) Run the following hypothesis test from your sample.
(z*=1.650 1-tail)
H0: p=0.14
HA: p>0.14
c) Explain what your conclusion means in the context of this
situation.
3. You would like to estimate the proportion of student loan debts that are in...
3. You would like to estimate the proportion of
student loan debts that are in default. You randomly select 211
people who have student loans and find that 25 are in default.
A. Construct a 95% confidence interval to estimate
the proportion of student loans that are in default. (Round your
sample proportion to 4 decimal points as well as round your margin
of error to 4 decimal points. For example, .23916 would be .2392
and this represents...
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