Question

**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 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.

Answer #1

Use the given degree of confidence and sample data to find a
confidence interval for the population standard deviation σ. Assume
that the population has a normal distribution. Round the confidence
interval limits to the same number of decimal places as the sample
standard deviation. A sociologist develops a test to measure
attitudes about public transportation, and 27 randomly selected
subjects are given the test. Their mean score is 76.2 and their
standard deviation is 21.4. Construct the 95% confidence...

#1 Use the confidence level and sample data to find a confidence
interval for estimating the population μ. Find the margin of error
E and round your answer to the nearest tenth. Test scores: n = 93,
LaTeX: \bar{x}x ¯ = 88.5, σ = 6; 99% confidence
#2 A sociologist develops a test to measure attitudes towards
public transportation, and n = 82 randomly selected subjects are
given the test. Their mean score is LaTeX: \bar{x}x ¯ = 75.9 and...

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

A sociologist develops a test to measure attitudes about public
transportation, and 27 randomly subjects are given the test. Their
average score is 76.2 and their standard deviation is 21.4.
Construct the 95% confidence interval for the mean score of all
such subjects. Also find the margin of error. Round your answers to
3 decimal places.
a. (66.745,85.655), margin of error=9.455
b. (69.176,83.224), margin of error=7.024
c. (0.178,0.377), margin of error=0.101
d. (67.734,84.666), margin of error=8.466
e. (0.248,0.463), margin of...

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

A sociologist develops a test to measure attitudes towards
public transportation, and n = 79 randomly selected subjects are
given the test. Their mean score is x ¯ = 74.3 and their standard
deviation is s = 18.7. Find the margin of error E for the 95%
confidence interval for the mean score of all such subjects, and
round to the nearest tenth.

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.
The football coach randomly selected ten players and timed how long
each player took to perform a certain drill. The times (in minutes)
were:
7.1 10.5 9.0 8.9 11.2
7.0 6.3 11.1 10.8 12.3
Determine a 95% confidence interval for the mean time for all
players.
Select one:
a. 10.93 min < μ...

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 185
milligrams with s=17.6 milligrams. Construct a 95% confidence
interval for the true mean cholesterol content of all such
eggs.
A.173.7mg <μ <196.3mg
B.173.8mg <μ <196.2mg
C.175.9mg <μ <194.1mg
D.173.9mg <μ <196.1mg

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.
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 construct
a confidence interval for the population mean μ. Assume that the
population has a normal distribution.
n = 30, = 84.2, s = 18.4, 90% confidence

ADVERTISEMENT

Get Answers For Free

Most questions answered within 1 hours.

ADVERTISEMENT

asked 4 minutes ago

asked 7 minutes ago

asked 9 minutes ago

asked 16 minutes ago

asked 19 minutes ago

asked 20 minutes ago

asked 37 minutes ago

asked 37 minutes ago

asked 38 minutes ago

asked 44 minutes ago

asked 50 minutes ago

asked 55 minutes ago