Review the work below for calculating a confidence interval for a sample mean. Redo the work and confirm that it is correct, or correct it and note the errors. What is the final margin of error E? What is the final confidence interval? Offer an example of a population mean that would fit into the confidence interval. Offer an example of a population mean that would be outside of the confidence interval.
Review the work below for calculating a confidence interval for a sample mean. Redo the work and confirm that it is correct, or correct it and note the errors. What is the final margin of error E? What is the final confidence interval? Offer an example of a population mean that would fit into the confidence interval. Offer an example of a population mean that would be outside of the confidence interval.
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Review the work below for calculating a confidence interval for a sample mean. Redo the work and confirm that it is correct, or correct it and note the errors. What is the final margin of error E? What is the final confidence interval? Offer an example of a population mean that would fit into the confidence interval. Offer an example of a population mean that would be outside of the confidence interval.
Transcribed Image Text:1
2
9
OZ critical value
1 Margin of Error
2
3
3
4
Sample Size n
5 Sample Mean x-bar (careful with rounding!)
5 Population Standard Deviation o
7 Confidence Level (click drop down)
Margin of Error E (only enter if given)
4
5
6
Confidence Interval Worksheet - MM207 Unit 9 and 10
Confidence Interval for MEANS
Enter Values in the Yellow Boxes Below
Minimum Sample Size
Confidence Interval for the Mean
35.6518366599051 <= µ <= 52.7881633400949
55
44.22
32.42
95%
1.96
8.56816
ΝΑ
Confidence Interval for PROPORTIONS
Enter Values in the Yellow Boxes Below
Sample Size n
Sample proportion p-hat (careful with rounding!)
Confidence Level (click drop down)
Margin of Error E (only enter if given - use decimal)
Z critical value
Margin of Error
Minimum Sample Size
Confidence Interval for the Proportion
NA <= p <= NA
not specified
2
ΝΑ
ΝΑ
Normal Probability
Distribution Critical Values
of z Table
Confidence Level
not specified
90%
91%
92%
93%
94%
95%
96%
97%
98%
99%
z critical value
2
1.65
1.7
1.75
1.81
1.88
1.96
2.05
2.17
2.33
2.58
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