Question

a
sociologist develops a test designed to measure attitudes about
disabled people and gives the test to 16 randomly selected
subjects. their mean score is 71.2 with a standard deviation of
10.5. construct the 99 percent confidence interval for the mean
score of all of the subjects

Answer #1

99% Confidence interval:

LCL: 64.436

UCL: 77.962

A sociologist develops a test to measure attitudes towards
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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.

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
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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 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...

A screening procedure was designed to measure attitudes towards
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low scores indicate positive attitudes. Independent random samples
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For the former group, the sample mean and standard deviation scores
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A large software company gives job applicants a test of
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past. Twenty five job applicants are randomly selected, and they
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Assume that the scores are normally distributed. Construct a 98%
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