SOLUTION: It is known that 10% of the customers in an electronics store purchase an MP3 player. A random sample of 30 customers is selected. Assume that the customers� purchases are made ind

Question 888622: It is known that 10% of the customers in an electronics store purchase an MP3 player. A random sample of 30 customers is selected. Assume that the customers� purchases are made independently. What is the probability of �success� in a single trial of this binomial distribution application?

a.10%

b.30%

c.50%

d.70%

e.90%
Answer by Okamiden(22) (Show Source): You can put this solution on YOUR website!
This is sort of a trick question to test if you understand what a binomial is. But, in actuality, it just tests if you understand trick questions. :)
.
The questions asks for the probability of success in exactly ONE single trial. That's always simply 10%; If you take one single customer in these 30 customers, that represents one single "trial". That "trial" has a 10% chance of "success", which is purchasing an MP3 player.
.
Answer: a)
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