
MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
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Transcribed Image Text:aragraph
Styles
Describe the Data:
(While we don't know the population standard deviation, we will still use the Normal distribution,
since our sample size is greater than 30.)
Export an image of the Dot Plot with the Confidence Interval with the two x = lines showing.
Then, input the calculated values into the table.
6|
Mean (x)
420.465714286
Standard Deviation
13.5795248738
(s)
n=35
Sample size (n)
a/2
-1.69092425519
Error Bound (Eze/2) 3.88127760694
-416.584436679
Lower Limit
(Iztower)
Upper Limit
(Izupper)
350
400
450
=424.346991893

Transcribed Image Text:Some students think that a 90% confidence interval contains 90% of the data.
Using the dot plot from your link, count how many of the data
values lie within the confidence interval.
11
What percent of the data is this?
Is this percent close to 90%?
Discussion Questions:
(For each question, use one to two complete sentences to explain your answer.)
Explain why this percent should or
[
should not be close to 90%.
Explain what this confidence interval
means for this particular study.
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