MATH 221 Week 5 Homework | 100 OUT OF 100 | DeVry University
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Course
MATH 221
Institution
Devry University
From a random sample of 58 businesses, it is found that the mean time the owner spends on administrative issues each week is 20.53 with a population standard deviation of 3.54. What is the 95% confid ence interval for the amount of time spent on administrative issues? (13.45, 27.61) (19.24, 24.14) ...
math 221 week 5 homework | 100 out of 100 | devry university
the 95 confidence interval for these parts is 5698 to 5705 under normal operations a systematic sample is taken from the manufacturing
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MATH 221
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MATH 221 Week 5 Homework
Question 1
pts
From a random sample of 58 businesses, it is found that the mean time the owner
spends on administrative issues each week is 20.53 with a population standard
deviation of 3.54. What is the 95% confidence interval for the amount of time spent on
administrative issues?
(13.45, 27.61)
(19.24, 24.14)
(16.99, 24.07)
(19.62, 21.44)
Question 1
pts
From a random sample of 58 businesses, it is found that the mean time the owner
spends on administrative issues each week is 21.69 with a population standard
deviation of 3.54. What is the 95% confidence interval for the amount of time spent on
administrative issues?
(20.71, 22.67)
Correct Answer
(21.78, 22.60)
Question 1
pts
From a random sample of 58 businesses, it is found that the mean time the owner
spends on administrative issues each week is 20.53 with a population standard
,MATH 221 Week 5 Homework
deviation of 3.23. What is the 95% confidence interval for the amount of time spent on
administrative issues?
(20.93, 22.46)
(19.24, 24.14)
Correct Answer
(19.70, 21.36)
Question 2
If a confidence interval is given from 45.82 up to 55.90 and the mean is known to be
50.86, what is the margin of error?
10.08
2.52
Correct Answer
5.04
Question 2
pts
If a confidence interval is given from 43.8 up to 62.0 and the mean is known to be 52.9,
what is the margin of error?
, MATH 221 Week 5 Homework
Correct Answer
9.1
4.6
Question 2
pts
If a confidence interval is given from 43.83 up to 61.97 and the mean is known to be
52.90, what is the margin of error?
18.14
43.83
Correct Answer
9.07
4.54
Question 3
pts
If a computer manufacturer needed a supplier that could produce parts that were very
precise, what characteristics would be better?
wide confidence interval with high confidence level
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