Year    Change_Over_Five_Days    Change_For_Entire_Year 1    0.2    -0.2 2    0.2    -0.1 3    0.2    1.8 4    -0.4    1.2 5    -0.1    -0.3 6    0.2    -0.6 7    -0.1    0.8 8    -0.9    1.8 9    0.2    -0.7 10    0.1    -1.0 11    0.2    -1.0

MATLAB: An Introduction with Applications
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Author:Amos Gilat
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Chapter1: Starting With Matlab
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Year    Change_Over_Five_Days    Change_For_Entire_Year
1    0.2    -0.2
2    0.2    -0.1
3    0.2    1.8
4    -0.4    1.2
5    -0.1    -0.3
6    0.2    -0.6
7    -0.1    0.8
8    -0.9    1.8
9    0.2    -0.7
10    0.1    -1.0
11    0.2    -1.0

The accompanying data shows percentage changes (x;) in a stock market over the first five trading days of each of 11
years and also the corresponding percentage changes (y₁) in the index over the whole year. If the stock market index
increases by 1.0% in the first five trading days of a year, find 95% confidence intervals for the actual and also the
expected percentage changes in the index over the whole year. Discuss the distinction between these intervals.
Click on the icon to view the data.
Click to view the table of critical values of the Student's t distribution.
The 95% confidence interval for the actual percentage change in the index over the whole year runs from to
(Round to three decimal places as needed.)
Transcribed Image Text:The accompanying data shows percentage changes (x;) in a stock market over the first five trading days of each of 11 years and also the corresponding percentage changes (y₁) in the index over the whole year. If the stock market index increases by 1.0% in the first five trading days of a year, find 95% confidence intervals for the actual and also the expected percentage changes in the index over the whole year. Discuss the distinction between these intervals. Click on the icon to view the data. Click to view the table of critical values of the Student's t distribution. The 95% confidence interval for the actual percentage change in the index over the whole year runs from to (Round to three decimal places as needed.)
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