The weight and systolic blood pressure of 26 randomly selected
males in the age group 25 to 30 are shown in the following table.
Assume that weight and blood pressure are jointly normally
distributed.
1)Find the regression line relating systolic blood pressure (Y)
to weight (X).
What is the estimate for the slope parameter (b1)?
2)Find the regression line relating systolic blood pressure (Y)
to weight (X).
What is the estimate for the intercept parameter (b0)?
3)Test whether the slope parameter is significantly different
from zero.
What is the test statistic? Round your answer to two decimal
places.
4)Test whether the overall regression model is significant using
the ANOVA.
What is the test statistic? Round your answer to two decimal
places.
5)Make a 95% Confidence Interval for the slope.
What is the lower limit? Round your answer to two decimal
places.
6)Make a 95% Confidence Interval for the slope.
What is the upper limit? Round your answer to two decimal
places.
7)What is the predicted average value of BP when someone weights
230 lbs?
8)What is the value of the residual for the second observation
(subject #2) ?
9)Perform a residual analysis (Residuals versus Fits and Normal
Probability plot of the residuals). Are our model assumptions
valid?
The weight and systolic blood pressure of 26 randomly selected males in the age group 25 to 30 are shown in the followin
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