The same study that produced the seat belt safety data of Table 7.1 also took into account the age of the child involved in a fatal accident. The results for those children wearing no seat belts are shown on the next page. Here, X¡ = 1 if the child did not survive and X, indicates the age in years. (An age of zero implies that the child was less
The same study that produced the seat belt safety data of Table 7.1 also took into account the age of the child involved in a fatal accident. The results for those children wearing no seat belts are shown on the next page. Here, X¡ = 1 if the child did not survive and X, indicates the age in years. (An age of zero implies that the child was less
Linear Algebra: A Modern Introduction
4th Edition
ISBN:9781285463247
Author:David Poole
Publisher:David Poole
Chapter7: Distance And Approximation
Section7.3: Least Squares Approximation
Problem 31EQ
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Transcribed Image Text:7.3
The same study that produced the seat belt safety
data of Table 7.1 also took into account the age of
the child involved in a fatal accident. The results
for those children wearing no seat belts are
shown on the next page. Here, X, = 1 if the child
did not survive and X, indicates the age in years.
(An age of zero implies that the child was less
Age
Survivors
Fatalities
104
127
1
165
91
2
267
107
3
277
90
4
316
94
than 1 year old, an age of 1 implies the child was
more than 1 year old but not yet 2, and so on.)
a Construct an approximate joint probability
distribution for X, and X2.
b Construct the conditional distribution of X, for
fixed values of X2. Discuss the implications of
these results.
c Construct the conditional distribution of X2 for
fixed values of X1. Are the implications the
same as in part (b)?
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