What are the sample size n and dfI Write down the SEE, SE(a), SE(b), what do they tell us?I What is the 95% CI for β? Interpretation?I What is the 95% CI for α? Interpretation?I Can you draw the best fit line? sum test2 attVariableObsMeanStd. Dev.MinМаxtest22581.1616.164983698att251.1180349.regress test2 attSourcedfMSNumber of obs25F(1, 23)2.43%3DModel598.5333331598.533333Prob > F0.1329Residual5672.8266723246.644638R-squared0.0954%3DAdj R-squared0.0561Total6271.3624261.306667Root MSE15.705%3Dtest2Coef.Std. Err.P>|t|[95% Conf. Interval]att4.4666672.8673141.560.133-1.46482410.39816_cons45.4266723.152561.960.062-2.46805293.32139

Please note that as per our guidelines we can answer the first three sub-parts. Please post the remaining separately.

What are the sample size n and df I Write down the SEE, SE(a), SE(b), what do they tell us? I What is the 95% CI for β? Interpretation? I What is the 95% CI for α? Interpretation? I Can you draw the best fit line?

What are the sample size n and df I Write down the SEE, SE(a), SE(b), what do they tell us? I What is the 95% CI for β? Interpretation? I What is the 95% CI for α? Interpretation? I Can you draw the best fit line?

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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Question

What are the sample size n and df
I Write down the SEE, SE(a), SE(b), what do they tell us?
I What is the 95% CI for β? Interpretation?
I What is the 95% CI for α? Interpretation?
I Can you draw the best fit line?

sum test2 att
Variable
Obs
Mean
Std. Dev.
Min
Маx
test2
25
81.16
16.16498
36
98
att
25
1.118034
9.
regress test2 att
Source
df
MS
Number of obs
25
F(1, 23)
2.43
%3D
Model
598.533333
1
598.533333
Prob > F
0.1329
Residual
5672.82667
23
246.644638
R-squared
0.0954
%3D
Adj R-squared
0.0561
Total
6271.36
24
261.306667
Root MSE
15.705
%3D
test2
Coef.
Std. Err.
P>|t|
[95% Conf. Interval]
att
4.466667
2.867314
1.56
0.133
-1.464824
10.39816
_cons
45.42667
23.15256
1.96
0.062
-2.468052
93.32139

Definition Definition Number of subjects or observations included in a study. A large sample size typically provides more reliable results and better representation of the population. As sample size and width of confidence interval are inversely related, if the sample size is increased, the width of the confidence interval decreases.

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