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You are surveying people exiting from a polling booth and asking them if they voted independent. The probability (p) that a person voted independent is 20%. What is the probability that 15 people must be asked before you can find 5 people who voted independen

Respuesta :

Answer:

Step-by-step explanation:

Let the distribution law followed is exponential law .

mean m = np where n = 15 , p = .2

m = 15 x .2 = 3

probability of 5 successes

= [tex]\frac{e^{-m}m^r}{r!}[/tex]

= [tex]\frac{e^{-3}3^5}{5!}[/tex]

= .1

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