QUESTION 1

Consider the following Confusion Matrix:

Actual (down) \ Predicted (across)	Yes	No	Totals
Yes	20	5
No	10	15
Total

The specificity of the predictions reflected in this matrix is:

QUESTION 2

The probability of count=2 in a Poisson process with lambda=3 is:

QUESTION 3

The risk that an event will occur at a point in time, assuming it has not already happened by that time, is referred to as the event's:

	A.	survival rate
	B.	failure density
	C.	cumulative failure density
	D.	instantaneous hazard