All use computer

It is reported that 72% of working women use computers at work. Choose 3 women at random, find the probability that all 3 women use a computer in their jobs.

Correct result:

p =  0.3732

Solution:

q=72%=72100=0.72  C3(3)=(33)=3!3!(33)!=11=1  p=(33) q3 (1q)33=1 0.723 (10.72)330.3732=0.3732   Verifying Solution:   p2=q3=0.7230.3732



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