30% of students at SAC prefer to take online courses. 80% of SAC students who say
they prefer to take online courses work full time. 25% of students who
do not prefer to take online courses work full time.
a) Draw a diagram to the left summarizing the sample space. Define variables you use.
b) Using symbols like P(A|B), list the two probabilities
you’d need to compare to see if online class preference
and work full time are independent.
c) Calculate the probabilities from part b
d) What does your answers in part c say about the relationship between
Online Preference and Work Amount?
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