The Average Time in Years to Get an Undergraduate Degree $p_1$

Multiple Choice

The average time in years to get an undergraduate degree in computer science was compared for men and women. Random samples of 100 male computer science majors and 100 female computer science majors were taken. Choose the appropriate parameter(s) for this situation.

A) P
B) $p_1$ - $p_2$
C) $µ$
D) $µ_1$ - $µ_2$