Question

**Use the given degree of confidence and sample data to
construct a confidence interval for the population proportion
p.**

When 291 college students are randomly selected and surveyed, it is found that 100 own a car. Find a 99% confidence interval for the true proportion of all college students who own a car.

Group of answer choices

0.272 < p < 0.415

0.279 < p < 0.409

0.289 < p < 0.398

0.298 < p < 0.389

Answer #1

Confidence interval for proportion calculation.

Lower bound = **0.272**

Upper bound = **0.415**

Use the given degree of confidence and sample data to construct
a confidence interval for the population proportion p. Round to
three decimal places.
When
267267
college students are randomly selected and surveyed, it is
found that
101101
own a car. Find a 99% confidence interval for the true
proportion of all college students who own a car.

Use the given degree of confidence and sample data to construct
a confidence interval for the population proportion p.
Of 117 randomly selected adults, 35 were found to have high
blood pressure. Construct a 95% confidence interval for the true
percentage of all adults that have high blood pressure.

Use the given degree of confidence and sample data to construct
a confidence interval for the population mean μ. Assume that the
population has a normal distribution. Thirty randomly selected
students took the calculus final. If the sample mean was 90 and the
standard deviation s = 6.7, construct a 99% confidence interval for
the mean score of all students

Use the given degree of confidence and sample data to
construct a confidence interval for the population proportion
p.
Of 354 randomly selected medical students, 20 said that they
planned to work in a rural community. Find a 95% confidence
interval for the true proportion of all medical students who plan
to work in a rural community.
* Round to exactly 4 decimal places. Write in interval notation
inside (). Leave one space after the comma. Include a leading 0....

Use the given degree of confidence and sample data to construct
a confidence interval for the population mean μ. Assume that the
population has a normal distribution. Thirty randomly selected
students took the calculus final. If the sample mean was 95 and the
standard deviation was 6.6, construct a 99% confidence interval
for the mean score of all students.
A.92.95 <μ <97.05
B.92.03 <μ <97.97
C.91.69 <μ <98.31
D.91.68 <μ <98.32

Use the given degree of confidence and sample data to
construct a confidence interval for the population mean
µ. Assume that the population has a normal
distribution.
A laboratory tested twelve chicken eggs and found that the mean
amount of cholesterol was 239 milligrams with s = 13.3 milligrams.
Construct a 95 percent confidence interval for the true mean
cholesterol content of all such eggs.
Group of answer choices
(230.4, 247.6)
(230.5, 247.5)
(230.6, 247.4)
(232.1, 245.9)

Use the given degree of confidence and sample data to construct
a confidence interval for the population proportion p.
nequals=130, xequals=69; 90% confidence

Use
the given degree of confidence and sample data to construct a
confidence interval for the population proportion p. 2) n = 125, x
= 72; 90% confidence

Use the given degree of confidence and sample data to
construct a confidence interval for the population mean
µ.
39 packages are randomly selected from packages received by a
parcel service. The sample has a mean weight of 21.1 pounds and a
standard deviation of 3.7 pounds. What is the 95 percent confidence
interval for the true mean weight, µ, of all packages received by
the parcel service?
Group of answer choices
(19.7, 22.5)
(19.9, 22.3)
(19.6, 22.6)
(20.1, 22.1)

1)
Use the given degree of confidence and the sample data to construct
a confidence interval for the proportion of population p.
Of 276 randomly selected employees of a company, 10.87% of
them travel by carpooling. Build a 90% confidence interval for the
actual percentage of all company employees who share the
trip.
Select one:
A. 6.04% <p <15.7%
B. 7.79% <p <14.0%
C. 6.50% <p <15.2%
D. 7.20% <p <14.5%
2) True or False: If we are interested in...

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