Computer output from a regression analysis is provided.
The regression equation is Y = 72.9 - 0.519 X
Predictor
Coef
SE Coef
T
P
Constant
72.909
2.037
35.79
0.000
X
-0.5195
0.1946
-2.67
0.008
(Please prioritize f and g, other exercises can be answered
after)
a. What is the
sample slope for this model?
b. What is
the sample intercept for this model?
c. What is the standard error of the sample
slope?
d. What is
the p-value for testing if the slope in the population is different
from zero?
e.
The sample size in this situation is n = 157.
What are the degrees of freedom for constructing a confidence
interval for, or performing a test about, the population slope?
f. The sample size in this situation
is n = 157. Construct a 95% confidence interval
for the population slope. Round the margin of error to four decimal
places.
g. Use the
p-value for testing if the slope in the population is different
from zero (and a 5% significance level) to make a clear conclusion
about the effectiveness of the model.
Computer output from a regression analysis is provided. The regression equation is Y = 72.9 - 0.519 X Predictor Coef SE
-
answerhappygod
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Computer output from a regression analysis is provided. The regression equation is Y = 72.9 - 0.519 X Predictor Coef SE
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