SOLUTION: Twenty four percent of cell phone users use their cell phones to access the internet. In a random sample of 10 cell phone users, what is the probability that exactly 2 have used th

Algebra ->  Probability-and-statistics -> SOLUTION: Twenty four percent of cell phone users use their cell phones to access the internet. In a random sample of 10 cell phone users, what is the probability that exactly 2 have used th      Log On


   

Question 749538: Twenty four percent of cell phone users use their cell phones to access the internet. In a random sample of 10 cell phone users, what is the probability that exactly 2 have used their phones to access
The internet?

B.)what is the probability that less than two have used their phones to acess the internet?
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
Twenty four percent of cell phone users use their cell phones to access the internet.
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In a random sample of 10 cell phone users, what is the probability that exactly 2 have used their phones to access the internet?
Binomial with n = 10 and p(use) = 0.24
P(x = 2) = 10C2*0.24^2*0.76^8 = binompdf(10,0.24,2) = 0.2885
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B.)what is the probability that less than two have used their phones to acess the internet?
P(0<= x <=1) = binomcdf(10,0.24,1) = 0.2673
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Cheers,
Stan H.
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