Question 167423: Nine customers at a supermarket are asked independently if they use brand X laundry soap. In general, 27% of the population use this brand. What is the probability that among the nine, more than two people use brand X? (Round your answer to 4 decimal places.)
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! Nine customers at a supermarket are asked independently if they use brand X laundry soap. In general, 27% of the population use this brand. What is the probability that among the nine, more than two people use brand X? (Round your answer to 4 decimal places.)
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P(x>=3) = 1 - binomcdf(9,0.27,2) = .45523...
Cheers,
Stan H.
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