How Many Statisticians -- Does It Take To Change A Light Bulb?

How many philosophers -- does it take to change a light bulb?
Three. One to change it and two to stand around arguing over whether or not the light bulb exists....
How many graduate students -- does it take to screw in a light bulb?
It all depends on the size of the grant....
How many Purdue engineering students -- does it take to change a light bulb?
One, and he gets three credit-hours for it....
How many statisticians -- does it take to change a light bulb?
This should be determined using a nonparametric procedure, since statisticians are NOT NORMAL....
How many psychologists -- does it take to change a light bulb?
Just one, but the light bulb has to really WANT to change....
How many blondes -- does it take to change a light bulb?
Three. One to hold the light bulb, two to spin the ladder....
How many lawyers -- does it take to change a light bulb?
It only takes one to change your bulb to his bulb....
How many Cornell students -- does it take to change a light bulb?
Two, one to change the light bulb and one to crack under the pressure....
How many doctors -- does it take to screw in a light bulb?
That depends on whether it has health insurance....