2015 Quiz 3, Solutions

1.1 10
1.2 2
1.3 5
1.4 25
1.5 10 +/ 10

2.1 

The ages seem lower for the delinquent accounts.
Could be that P(Y=1|age) is decreasing in age.

2.2

P(Y=1|age) is decreasing in age.

2.3

(3-1.1)/0.0316
[1] 60.12658