What is the probability that a randomly selected customer

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A clothing store owner finds that 35% of the customers entering the store ask an assistant for help and that 20% of the customers make a purchase before leaving. It is also found that 50% of all customers who ask for assistance make a purchase.

a) What is the probability that a randomly selected customer asks an assistant for help and makes a purchase?  

b) What is the probability that a randomly selected customer asks an assistant for help or makes a purchase?

c) What is the probability that a randomly selected customer asks an assistant for help and does not make a purchase?

d) Are the events asks an assistant for help and makes a purchase independent? Why?

e) Are the events asks an assistant for help and makes a purchase mutually exclusive? Why?

f) Are the events asks an assistant for help and makes a purchase collectively exhaustive? Why?

Reference no: EM132376977

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