Question

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.

Answer #1

Here we want to construct a 95% confidence interval for the true percentage of all adults that have high blood pressure.

Let' write given information.

n = sample size = 117

x = number of adults who have high blood pressure = 35

Confidence level = c = 95%

Let's used minitab to construct confidence interval for population proportion ( P )

Step 1) Click on Stat>>>Basic statistics>>>1-proportion...

Step 2) select summarized data

number of events = x = 35

Number of trials = n = 117

Step 3) click on option

The given confidence level is = 95.0

so put "Confidence level " = 95.0

Alternative = not equal

then click on "Use test and interval based on normal approximation"

Then click on OK and again click on OK

So we get the following output

From the above output the 95% confidence interval for population
proportion is **(0.216177, 0.382113)**

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.
When 291 college students are randomly selected and surveyed, it
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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

use a given degree of confidence and sample data to
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a study involves 607 randomly selected deaths, with 35
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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....

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...

Use the given degree of confidence and sample data to
construct a confidence interval for the population mean μ. Assume
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A sociologist develops a test to measure attitudes towards public
transportation, and 27 randomly selected subjects are given the
test. Their mean score is x ¯ = 76.2 and their standard deviation
is s = 21.4. Construct the 95% confidence interval for the mean
score of all such subjects.

Use the given degree of confidence and sample data to construct
a confidence interval for the population mean µ. 31 packages are
randomly selected from packages received by a parcel service. The
sample has a mean weight of 15.7 pounds and a standard deviation of
1.7 pounds. What is the 95 percent confidence interval for the true
mean weight, µ, of all packages received by the parcel service?
(15.2, 16.2) (14.9, 16.5) (15.0, 16.4) (15.1, 16.3)

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

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a confidence interval for the population mean µ. Assume that the
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6) The football coach randomly selected ten players and timed
how long each player took to perform a certain drill.
The times (in minutes) were:
7.8
10.6
9.9
8.1
11.5
7.2
6.2
11.1
10.6
12.9
Determine a 95% confidence interval for the mean time for all
players.

Use the given degree of confidence and sample data to
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µ.
39 packages are randomly selected from packages received by a
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Group of answer choices
(19.7, 22.5)
(19.9, 22.3)
(19.6, 22.6)
(20.1, 22.1)

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