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STA 3024 Introduction to Statistics 2
Quiz 3 Problem
1) Find the unknown a, b, c, d, e, f, g. (20 points)
The regression equation is
Y = 25.7 + 15.8 X
Predictor
Constant
X Coef
a
b SE Coef
53.30
4.499 T
0.48
3.51 P
0.655
0.025 Analysis of Variance
Source
Regression
Residual Error
Total DF
c
d
17 SS
e
19496
87021 MS
f F
g 2) Interpret the intercept and the slope.(10 points)
3) Test whether β = 0 using the onesided test with the H1 : β < 0 (given α = 0.05).
(20 points)
4) Find and interpret a 99% CI for β . (20 points)
5) Find the correlation, the coeﬃcient of determination. Interpret them. (10 points)
6) Test whether ρ = 0 (given α = 0.05). Is the conclusion consistent with your answer
from part (2)? (20 points)
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This note was uploaded on 12/15/2011 for the course STA 3024 taught by Professor Ta during the Spring '08 term at University of Florida.
 Spring '08
 TA
 Statistics

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