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40 percent of business travelers carry either a cell phone or a laptop computer US today September 12 2000 for a sample of 15 business travelers compute the probability that 3 of the travelers carry?
Wiki User
∙ 10y ago
success p=40%=40/100=0.40 so therefore, (failure) q=1-0.40=0.60
n=15
Formula: P(x=x)= n!/x!(n-x)! p^x q^n-x
P(x=3)=15!/3!(15-3)! 0.40^3 q^15-3 = 0.0634 or 63% (0.0634/100=63%)
Wiki User
∙ 10y ago
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